Butter Stick Programable Keypad
Butter Stick is a programable keypad, created by Jane Bernhardt. This came out around 2019.
The great thing about Butter Stick is that it uses the powerful open source QMK software. So you can really design great macros.
The bad thing about Butter Stick is that there is no grouping gaps between keys, so it would be hard to use the middle section keys without visual contact.
Program The Butter Stick
The Butter Stick uses the QMK software to program the firmware.
see https://config.qmk.fm/#/butterstick/LAYOUT_butter