I have several boxes of the following tiles. These all came from Lowe's so you should be able to get additional tiles there if you need them. They are all 12 X 12 tiles.
About 40 white tiles (ceramic)-$20.00
11 white and 10 black 4 X 4 ceramic tiles-$10.00
About 30 wall or floor beige (porcelain)-$20.00