If you live in PDX, there is no reason you shouldn't visit SCRAP on N. Williams.
We found this really great fabric- also got a panel in green. You can cram a grocery bag full of fabric and the whole thing costs $6!
Michael enlisted my help in arranging these carpet samples on a mat to make a new inside door mat. After I arranged the little squares in a fixated way that was either like a kindergardener or a meth-head, he attached them using construction adhesive. They feel rad to walk on.