Sometimes you want instant gratification. That's when dish cloths come into play (don't they always?). And sometimes, you want a project that's not really even a project at all and that doesn't require a pattern or more commitment than part of an hour...
Here you have the simplest dish cloth in the world. Cast 23 stitches of cotton onto size 6 needles. Seed stitch until square. Border with half double crochet. Beyond easy. Useful. Lovely. About 75 cents a piece.