Do you have any squares to spare?

I’ve been making some squares for “Warm Up America!” afghans. The idea is that lots of different people can each knit squares of the same size but in different yarns, and then several people’s different squares can be sewn together to make big colorful afghans. I’ve decided to knit some squares up using acrylic oddballs I have around. They're going very quickly with thicker yarns (or thin yarns held double, which also makes for warmer afghans) and can be about as simple or as interesting in stitch pattern as you want them to be. I’ve wanted to do some sort of charity knitting for a while now, and this seems like a good idea as well as a great use for surplus yarns!