[jxf]

Delightful, but in the simulataneous categories of "I would absolutely buy this" and "I do not have the time or energy to make this myself".

[qbasic_forever]

PocketBeagle is a cool very tiny (smaller than a business card) Linux SBC if you want something kinda similar: https://beagleboard.org/pocket

[gmac]

Also: incredibly cool, but next week’s e-waste. :(