Depresion era Grandfather and how he upcycle crafted

I get my crafty side from this grandfather, Abel Girard. He passed it down to my Dad and then my Dad passed it on to me. So in honor of Father's Day I thought I'd share a bit of my grandfather's craftiness.
Now this may look like an ordinary emery board or nail file, but no!
Pepe (the French word for grandfather) made these out of sandpaper and old popsicle sticks!
I have a few of them and I use them and think fondly of him as I do.
I don't have any but he also would cut old bicycle inner tubes and cut them into rubber bands!