Oh, that reminds me, there is this book of Jewish "Puzzle Stories and Wisdom Tales,"
While Standing on One Foot.
http://www.amazon.com/While-Standing...ng+on+one+foot
I have this book because I was working for the publisher at the time it came out, and I confess I never read it! Now I think my daughter would be interested in it, I will have to look for it.
eP