You could create some really cool mosaics. 

Here’s my favorite. It’s of Greek women on the island of Sicily (before it was Italian) doing their athletic competitions in bikinis. 

https://www.google.com/imgres?imgurl=https://i.pinimg.com/originals/aa/cc/b2/aaccb2210f9f9471fc37cadb0812f1c6.jpg&imgrefurl=https://www.pinterest.com/pin/63613413459895190/&tbnid=c0JZpc_x9NkQzM&vet=1&docid=1F2Erue2i7E99M&w=800&h=600&hl=en&source=sh/x/im

They say the bikini was invented in 1950, but this is proof they were around a long time before that.