Thanks for all the advice. You're maybe thinking of Tux Paint? I've seen it mentioned a few times but haven't tried it yet. Haven't used GIMP myself but when I'

Thanks for all the advice. You're maybe thinking of Tux Paint? I've seen it mentioned a few times but haven't tried it yet. Haven't used GIMP myself but when I've tried I found it a bit hard to get started with. Could probably set up a live cd on an SDCard, maybe have another partition for storing their "stuff". Will look into that approach. We actually tried to run an amstrad emulator on a first edition RPi the other day and it worked ok-ish. I played with Scratch and it seemed like it would work well. Will definitely be installing that. I use ipython all day so Jupyter is definitely on my list.