Ah, the mosaic box! I have one of those. Roberta12 you just reminded me of it and an idea jumped into my head. I have purchased a new (to me) home that I am currently renovating before moving there next Spring. One of the reworks is replacing steel posts that were rusting from burial in the ground some 20 years back. In order to reduce the rusting problem I had new footings cast for replacement posts that are a few inches above grade and about 2 feet square on top. Perfect place for my box of broken up rejects as a mosaic to cover the footing tops. Now I don't have to move a useless, but kept, box of shards; there is a useful project for them I can tell my bride about! I guess my failures now have a purpose. Since there are nine of these footings, I will have a place to repurpose shards for some time.