If the sponsors don't have them Alison, they have a full set in TW for £6.

I have just been asking the sponsors for an acrylic block for stamping 8"x3" minimum, but no luck. Scrapmate came up with a great idea which I'd sort of thought of, she suggested using a plate off a cutting machine. I'd already tried the lid of my WRMK precision press which worked fine but today I tried the plate of the Spellbinders Platinum because I got two sizes of plates and I only use the A4, if I am cutting small I often get my CB out instead. Anyway, it worked fine, a bit on the thin side, rather like the Tim Holtz ones but it will do for now until I can find something thicker. It would be tricky if I had long nails but I tend to cut them short because they grow so quickly.