I found some leftover colored sand, and I left it up to Kay to decide what to do with it. She had an answer right away, "We could put glue on the paper and make pictures." Okay, works for me. I got the glue and paper, she carried the sand and we brought everything outside. (This definitely seemed like one of those 'outdoor crafts.') She started by mixing all the colors together, making a less-than-attractive combination, but the glitter that was also included at least made it sparkly. She squirted glue on in various (seemingly random) designs, then sprinkled the sand onto the paper, first pinching it between her fingers, then finally scooping it out of the bucket and dumping it on top of the glue. She worked with concentration, occasionally saying, "I need more paper!" I'd slip her a sheet and she'd get back to working quietly.
When the creative mood was passed, there was still plenty of sand left, so she dumped it into her sand table, combining it with the plain old boring sand, and that too entertained her for awhile, digging and mixing. If I knew simple colored sand would have been so entertaining I would have found some before now!