Still thinking about extremely resource limited computing.
And general purpose computing at that too.
My previous explorations have taught me that you can have quite a nice time with about 8K RAM.
On the arduino mega, for instance, you have about 5K free user program space after loading Tiny BASIC.
BASIC remains on the menu, of course, despite its negative reputation. Lisp and FORTH are both live options as well.
@dirtycommo Am I wrong, or would #Forth be a more effective use of 8K than Basic?