The good news - I found a pattern I like - not one that I showed before. It matches on the minor colours and I like it a lot. I decided that completely random with this many colours was perhaps a bit too much. I've seen some on Ravelry that were completely random but the ones with a bit of pattern (or random but with fewer colours) were the ones that really jumped out at me.
The bad news - I need to knit 11 more squares and not use 8 of the ones I've already knit (and some of them I've blocked)... I guess I'll block the ones that I've knit and haven't blocked and give them to my mom for her charity thing. So not a waste but still - 11 more blocks!