Mosaic car rim planter. I picked up four car rims on craigslist. I sanded the outside of the rim with steel wool and wiped it off. I used DAP StrongStik to glue the pieces on, and I used marbles that were flat on the back, buttons (cut the backs off), old watch bands I got at a thrift store, and stained glass. When the glue was dry, I grouted it with unsanded grout in a cocoa color from Lowe's. The grout was labeled for indoor or outdoor use.