Leftover strata pieces............

Last week I cleaned out 2 drawers in a cabinet in the basement and these leftover pieces were in one of them.  They are from a project about 3 years ago.  I started playing with them to see what I could make with them.
I finally decided to just make mug rugs from them.  The six on the right have all of the same fabric group in each of them.  The 3 on the left have mixed groups.  They aren't masterpieces by any means but they will look better when they have some matching fabric binding on them.