I lucked out a few weeks back, and was allowed to go through all the off bits from a glass blowing studio. Some of the pieces were EXTREMELY cool. Most of them are clear, but some are colored as well. In this piece, I glued the bits and bobs directly to a grouted mirror mosaic. As y'all know, I don't normally grout, but I do often have occasion to demonstrate grouting, so layered pieces like this work well for when grouting is the order of the day.