Check out what I did for my kids during the freeze.
I set up a sprinkler, and hung up a bunch of string and put out things for the ice to collect on. Ran the sprinklers at night for a couple days this weekend and last weekend. It might be there for a long time... we don't get any sun at all in this backyard.
My girls loved it. Yesterday, they got to crawl around in it with hammers.