Felt, glue and wood, felt can be found at any craft store as for the wood and glue you know where to get those get a piece of wood big enough for a desk, you don't want to be cramped when performing sleights. Take the felt around and glue it to the bottom of the board and make sure it's smooth you don't want any waves. I was planning on doing this actually before I bought a close-up mat which I do recommend I got a very nice one about 24in x 19in, for 24 dollars from a local shop.