Here's a fun thing to try...
Found a website called Picklebums that teaches a tutorial about
printing with nuts & bolts, although I would call it stamping.
(All of the photos and info are from Picklebums.)
She has lots of these tutorials that show how to make easy art for kids.
You can use your old fasteners or grab one of something.
This little guy is doing a fabulous job!
Not a hex shape?!
Still not a hex shape?!
At least the drives show up.
I think this looks so messy and fun.