A canvas crying for something…
Ask friends, go to thrift stores, check garage sales for things to break into small pieces like old tiles, pottery, plates, etc. Be sure to use safety goggles when you smash. The pieces really fly. I usually break in a plastic grocery bag or a towel. Then I try to separate in colors.
I solicited my kids and friends to get creative.
It is still a work in progress.
Hope you try.
Have fun with it!