I am pretty sure I have it in me to write a Tiny BASIC for the Arduino Uno and the like, with their 2K RAM.

However, the little project, despite being a diversion while I wait for parts, has not failed at wrinkling my brain.

Luckily I have found some existing historical BASIC interpreters on a random web page from the 2000s, which, among other things, includes a 6800 implementation of Tiny BASIC, and some KIM-1 tape dumps of another variant.