Crafts Using Recycled K-Cup Coffee Filters

I love my Keurig coffee pot, but I tend to use quite a lot of the K-cups and they are not recyclable. I do clean them and re-use with some plastic K-caps I found on line. But after a few uses, the filter tears up and can't be used again.
One suggestion is to use them for seed starters. I was wondering if anyone else has come up with uses for the empty cleaned K-cups.

By PM