I have seen so many of these, wanted to copy and have one of my very own.
Didn't quite turn out like the one I saw, but I had no idea
how crucial it was to fold them all identically (hindsight - very important).
But seeing as I got a book of maps at the junk store and had cardboard and hot glue onhand.
I'd say , Not bad for $0.25!
I love it!