Every dad should have a copy of this
www.amazon.co.uk/Dad-Stuff-Shedloads-Ideas-Dads/dp/0743275748/ref=sr_1_1?ie=UTF8&s=books&qid=1245411079&sr=1-1

It full of old classics like pretending to pull your nose off and the same with the thumb but there are some ace tricks and puzzles to set your kids that I'd never heard of before.
( Mrs Sp@m, Fri 19 Jun 2009, 12:32, archived)

Wait
My dad can't really pull his nose off?
( Newington, Fri 19 Jun 2009, 12:44, archived)