my kids got a 'make your own fridge magnet set' and the moulds are reusable but i have ran out of powder to make more...hobbycraft i have been to 4 times now and they are always out of stock!!!
where can i buy it from?and maybe some more moulds for them

Have you tried the craft shop on the end of london rd?

I was in Wilkinsons in Hillsborough today and I spotted that they had refill packs of plaster for their 'make your own fridge magnet' sets. I think they were a pound or so.

Hope it helps :)