Kafanzi Max. Praetor

This gives the highest ROI

You can pick up literally anything with this one.

You broke and reinforced relativity at the same time

educate people!

depending on your technical aptitude, you could wipe iOS and install linux, I’m sure there are projects allowing that.

then it can become a simple graphic terminal for smart home

home assistant is full similar pet project, with old kindles and tablet to control the server