Have you looked over on the stained glass and mosaic forum? There might be inspiration there.

Here is a link that might be useful: Stained glass and mosaic forum

I'd try it on Graigslist first for about $100. Someone else may be looking for the perfect accent tile and this could be it.

If you have room to store some, do that.

There's another thread here about one's decisions being influenced by childhood memories. My mother always made a big deal about how she purposely overbought floor tile and then had exact matches when some needed replacing. So when we tiled our kitchen and dining room, I lugged the left overs first to the basement, and then from the basement to a shed and finally to a second spot in the shed. Each time DH chuckled at my "Midwestern frugalness."

Years later, though, when we decided to remove a wall and push the peninsula back a bit we had the tiles to fill in the gaps. When we were choosing elements for the kitchen upgrade, we had an extra tile to carry around.

I did the same for bathroom tile. When we changed sinks, again we were able to readily replace the few tiles that were damaged in the process.

I realize that what you have are the small mosaics and not floor tile, but still, I'd at least save a few sheets just in case. For the rest, a patio table would be a nice project. You clearly have good tiling skills!