We do things like scroll your name - one character at a time is rubbish.
Then we do a digital pet (think tamagotchi) and again, with a low pixel count this is crap. They want to draw unicorns or fish or bunnies. None of this is possible.
After that they want it to beep when the pet is hungry. No can do.
if I recall on the Apple II, the speaker was a single bit on/off .. I played games that had music playing concurrently with the onscreen action and even speech!
I understand about the pictures though and I can understand if they kept it simple on purpose to prevent them from being able to download a picture and show it.. I work in a school and while we have a 3d printer on loan from a local company, in the main kids want to print a Voldemort, not something they made themselves..