If the're soft enough you could use some to make one of those baby's soft books http://www.galt.co.uk/firstyears/fyear05.htm
...although that's only going to use a few.
also on the child front, cut into squares, glue and stack into cubes and cover to make soft play building blocks/alphabet blocks. We have some giant dice at work made in the same way. Great fun and no more losing the dice under furniture mid game.