• May include: Two beige alphabet rings are stacked on a wooden surface. The rings have raised letters around the outer edge. One ring is tilted, revealing the inner circle. The rings are a light tan colour.
  • May include: A red cipher wheel, 3D-printed with an inner ring and two outer rings, each with engraved letters. The text "THIS IS ONE UNIT" is above the wheel.
  • May include: A collection of cipher rings in various colours: orange, blue, red, and green, plus a silver one. A paper shows a coded message and instructions: "write a message, pick a cypher, convert every letter, send the secret message!"
  • May include: Diagram showing a data transformation process. Two rows of lettered boxes, with arrows indicating the movement of data elements. The letters "B" and "E" are highlighted in light blue. The diagram illustrates data reordering.
  • May include: White background with black text. The text includes the following phrases: Wpeen Wdaxspnh, ugdb Gpsxpci, Pgixuprih, pcs qt hjgt, and id sgxcz ndjg Dkpaixct!
  • May include: A black, circular object with a layered design, held in a person's hand. The object appears to be made of a dark material and has a ring-like shape with a central opening. The hand is pale, and a gold ring is visible on a finger.
  • May include: A dark grey metal ring with two rotating bands, each engraved with the letters of the alphabet. The ring has a cylindrical shape with a central opening. The letters are in a sans-serif font.
  • May include: A grey, 3D-printed ring with the letters A to Z embossed around the outer edge. The ring is made of a textured material and is stacked on top of another similar ring. The rings are approximately 2.5 cm in diameter.
  • May include: A range of colourful grappling hooks in opaque and translucent finishes. The hooks are in various colours, including green, blue, red, black, grey, white, orange, pink, purple, and yellow, with silver hardware. The word "Colors" is in the centre.
  • May include: Image featuring the words "Radiant Artifacts" in a decorative font. The text below outlines the company's commitment to environmental responsibility, including the use of recycled packaging and renewable energy.
  • May include: Two beige alphabet rings are stacked on a wooden surface. The rings have raised letters around the outer edge. One ring is tilted, revealing the inner circle. The rings are a light tan colour.
  • Product video
  • May include: A red cipher wheel, 3D-printed with an inner ring and two outer rings, each with engraved letters. The text "THIS IS ONE UNIT" is above the wheel.
  • May include: A collection of cipher rings in various colours: orange, blue, red, and green, plus a silver one. A paper shows a coded message and instructions: "write a message, pick a cypher, convert every letter, send the secret message!"
  • May include: Diagram showing a data transformation process. Two rows of lettered boxes, with arrows indicating the movement of data elements. The letters "B" and "E" are highlighted in light blue. The diagram illustrates data reordering.
  • May include: White background with black text. The text includes the following phrases: Wpeen Wdaxspnh, ugdb Gpsxpci, Pgixuprih, pcs qt hjgt, and id sgxcz ndjg Dkpaixct!
  • May include: A black, circular object with a layered design, held in a person's hand. The object appears to be made of a dark material and has a ring-like shape with a central opening. The hand is pale, and a gold ring is visible on a finger.
  • May include: A dark grey metal ring with two rotating bands, each engraved with the letters of the alphabet. The ring has a cylindrical shape with a central opening. The letters are in a sans-serif font.
  • May include: A grey, 3D-printed ring with the letters A to Z embossed around the outer edge. The ring is made of a textured material and is stacked on top of another similar ring. The rings are approximately 2.5 cm in diameter.
  • May include: A range of colourful grappling hooks in opaque and translucent finishes. The hooks are in various colours, including green, blue, red, black, grey, white, orange, pink, purple, and yellow, with silver hardware. The word "Colors" is in the centre.
  • May include: Image featuring the words "Radiant Artifacts" in a decorative font. The text below outlines the company's commitment to environmental responsibility, including the use of recycled packaging and renewable energy.
Report this item to Etsy

Classic Decoder Ring Caesar Cipher Secret Code Toy Novelty Educational Gift for Grade School Kid, decode Pair Rings

Michael G

Made by Michael

Owner of RadiantArtifacts

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What to know

Materials

PLA plastic

Made to Order

Yes

Gift wrapping

Gift wrapping by RadiantArtifacts

Includes white wrapping paper to obscure & protect the item, contained within a reusable mesh bag of a random color.

WHAT IS IT?
-This is a ring that lets you write secret messages to your friends that only they can read!

-The 'Caesar Cipher' is a classic coding technique. Simply shift the alphabet by some amount and use that as a reference to write your message. In this case twist the rings so that the letters line up in the right order. Then you send the key to your friend to tell them which letters to line up on their ring so they can decode the message in the same way!


-Makes a great novelty gift for an elementary school kid & their best friend, or for a Secret Agent Spy Activity Party Game!

-Learn how to use this ring here: https://en.wikipedia.org/wiki/Caesar_cipher

-Please see images of this listing to be clear that "1 Unit" is 1 physical ring for one person. If you are in close physical proximity to your friend you can pass them the ring along with your message. If your friend is far then we recommend buying 2 units.


EXACT DIMENSIONS: 1.6 in x 1.6 in x 0.6 in
-The hole is big enough to go on an adult finger but really its too bulky to want to wear for very long, better off attaching to a keychain.


WHAT IS IT MADE OF?
-This device is printed using environmentally friendly corn derived PLA plastic! It is durable enough to last a lifetime while still being biodegradable, so we feel great about how this product is manufactured!

-Note, due to the nature of the printing process the side walls of the parts have very fine lines. We are experienced printers with professional equipment but please do not expect an injection molded surface finish as it is not possible.


ABOUT THE STORE:
-All Radiant Artifacts products are produced by us in our workshop in Portland, Oregon, USA. It is our goal to produce products that genuinely light up your life! Our specialties are additive manufacturing, custom LED lighting, & novelties.

-Like our style but don't see exactly what you are looking for? Contact us to create the perfect piece, uniquely for you! -Thank you for considering our products!


Design credit for the original model: "Caesar Cipher Decoder Ring Rounded" by cymon is licensed under the Creative Commons - Attribution - Share Alike license. https://www.thingiverse.com/thing:14891

Cryptography, secretmessage

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What buyers say

Summarised by AI from all item reviews

4.8 (41)
As described Love it Looks great Fast delivery Helpful seller Perfect gift
View all item reviews

Price:CA$5.83+

Delivery & return policies

  • Order today to get by 12-17 Aug
  • Returns & exchanges not accepted.
  • Sent from: Portland, OR
  • Postage: CA$13.78
  • Deliver to United States, 43215

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Star Seller

This seller consistently earned 5-star reviews, dispatched on time, and replied quickly to any messages they received.

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Reviews for this item

4.8

We calculate this number using a recency-weighted average of all ratings, with a rating's value decreasing by half each year to best reflect the current experience.

(41 reviews)

4.9 Item quality
4.9 Delivery
5.0 Customer service
100% Buyers recommend

What buyers say

Summarised by AI from all item reviews

As described Love it Looks great Fast delivery Helpful seller Perfect gift

Filter by category
5 out of 5 stars 5

Matthew 26 Jan, 2026

Fantastic order fulfillment and service!

Matthew 26 Jan, 2026

5 out of 5 stars 5

Jamie 06 Jan, 2026

My siblings and I love it.

Jamie 06 Jan, 2026

4 out of 5 stars 4

Marie 18 Dec, 2025

I would have liked the letters to lock in place once the key is entered.

Marie 18 Dec, 2025

5 out of 5 stars 5

Etsy buyer 05 Aug, 2025

Got the gray / silver and they're really easy to read, fit well over an adult thumb, spin easily!

Etsy buyer 05 Aug, 2025

Photos from reviews

Meet your seller

RadiantArtifacts
Michael G
RadiantArtifacts ·

Oregon, United States

We calculate this number using a recency-weighted average of all ratings, with a rating's value decreasing by half each year to best reflect the current experience. 4.9
·
9.2k sales
·
7 years on Etsy
Michael Kelly
2 shop members

Usually responds in a few hours

Smooth dispatch Has a history of dispatching on time with tracking.

Speedy replies Has a history of replying to messages quickly.

Rave reviews Average review rating is 4.8 or higher.

View shop registration details

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Disclaimer: As with all children's products, adult supervision is required. Products that contain small parts may pose a choking hazard and should not be used by children under 3. Sellers are responsible for following applicable laws and regulations, including posting items with accurate labelling and warnings. Etsy assumes no responsibility for the accuracy, labelling, or content of sellers' listings and products. Always read labels, warnings, directions and other information provided with the product before using it. If you have any questions, message the seller. See Etsy's Terms of Use for more information.

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Listed on 23 Jul, 2026
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