S is for Sponge Bricks

Or; Brick Sponges? Ever had a mate throw a piece of sponge at you which you thought was a piece of concrete or a brick? Well, the sponge which looks like concrete doesn't seem to be around any more, it was used in play-pen mattresses when I was young, but I have found several bricks over the years!

The bright pink one had the Sun newspaper's logo down the side and was given away by them for some reason years ago, it started this rather small collection of - usually - Christmas novelties!