a great way to do penny floors without the permanence. do penny tiles, then tile the floor vs the penny and then lacquer on the floor itself. tutorial on how to make a pennies floor. most people that first see it don't realize that it's pennies.
a penny saved. is a tile floor! She used a mosaic mesh to make penny tiles for an entryway area. Might be useful in thinking about the TILE mosaic table top I'm thinking about - and the penny floor is interesting, too. great how to link