On 13 Dec 2011 11:11:58 +0000 (GMT), Theo Markettos
wrote:

You mean estate agents' boards and the like... interesting thought. We have
some foamboard (expanded polystyrene sandwiched between two flat surfaces)
that's intended for artwork mounting etc... works quite nicely but the foam
retreats back into the core around cut surfaces, so cuts aren't very rigid.

Just seen in a store with the colored paper and crayons: Stack of approx 2mm
thickness very fine foam rubber (neoprene?), assorted colors, 20 A4 sheets just
under 6 euros.

Might be useful to cut, stack and glue, or as gaskets?

Thomas Prufer