Mike Lowry - the illutrator, that is - makes some pretty cool things. I'm a fan of his insta account, and one of the things he showcases there is a series of random facts. Go HERE and recreate one of his random facts in your sketchbook.
Alternatively, you can take one of the facts and create your own illustration to go along with the fact.
p.s. If you want to know more about Mike Lowry you can google him, or just go HERE.