Mosaic on wood with mirror

Hi all, I don't have a picture, I saw these on the walls of a senior center I go to. Presumably made at the center by seniors. They were round wooden plaques or boards about a half to one inch thick about 10-12 inches round, with a 7 (?) inch round mirror pasted/glued on (some were dead center, others were lower and then they were mosaic-ed, some with broken pottery, some with sea glass, etc. They were exquisite.