This stamp has a low-profile 3d printed handle with sloping curves along the top and bottom edges. The thin size makes is easy to transport in one's pocket or purse and the ergonomic design of the handle makes it comfortable to grip and position precisely.

Ink pads can be found here:
https://www.etsy.com/listing/400849391/palette-stamp-pad-ink-refill?ref=shop_home_active_1
or here
https://www.amazon.com/gp/product/B0056ETF8I/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1
or here
https://www.rubberstampmaterials.com/feltstamppads.aspx

CONTEXT
I created this stamp as a response to the Trump administration's decision to walk back the plan to put Harriet Tubman on the $20 bill. On April 20, 2016, then-U.S. Treasury Secretary Jack Lew announced plans to add Tubman to the front of the twenty-dollar bill, moving President Andrew Jackson to the rear of the bill. Lew instructed the Bureau of Engraving and Printing to expedite the redesign process, and the new bill was expected to enter circulation sometime after 2020; however, Steven Mnuchin, the current U.S. Treasury Secretary, said that he will not commit to putting Tubman on the twenty-dollar bill, explaining "People have been on the bills for a long period of time. This is something we’ll consider; right now we have a lot more important issues to focus on."

LEGALITY
Though anti-counterfeiting laws prohibit the willful destruction of, and stamping of advertisements upon, paper money, pursuant to I.I.18 U.S.C. § 333 of the United States Code, stamped currency is fit for circulation so long as its denomination remains legible (a full explanation of the legality of currency stamping can be found here:
https://www.stampstampede.org/faq/yes-its-legal/)

All profit made from the sale of these stamps is donated to charity.
More info at https://tubmanstamp.com/