Any question answered...

does anyone know where to buy small mirrors from? to use in making stuff, unfinished, various small sizes (glass) or the kind of plastic that can be cut in a normal way. cheap as possible.
4D modelshop have some bits and pieces and sheets but somewhat expensive. could trawl pound shops and remove the frames/holders, just wondered if there is some other obvious source that I can't think of. Are there any friendly glaziers that might have offcuts?

isn't there a guy on here that makes mirror balls?