I'm wanting to make some individual activity math games using game pieces with numbers or shapes on them that the children can sort. I'm thinking that the little tiny bathroom tiles is about the size that would work, but would probably be too expensive. I'll need about 300 to make a class set. I know that I could make on construction paper and laminate, but I was wanting these to be thicker and easier to handle. Any ideas???? Thanks in advance for your help.