Make your own set of algebra tiles. This master can be duplicated on two different colors of paper, cut out and then the students can have their own set of algebra tiles. There are three types of tiles: units, x's an x-squares.
Also available in my store are templates for Algebra Models, a similar product to Algebra Tiles. That set contains pieces that represent units, x's, y's, xy's, x-squared, and y-squared.