I had been looking for a sand box on Craigslist to put in our little enclosed patio area so that Johnny could have something to do in our backyard. I needed one that had a lid since there are some lovely feral cats that frequent our yard. However, it seemed all of San Diego was also looking for a sandbox on craigslist and I couldn't email a seller fast enough.
Luckily, our neighbors down the street have a five-year-old who had grown out of her sandbox, so they offered it to us for free! Complete with sand! Sand that they sifted through to get rid of rocks and dead bugs all by themselves. And Johnny loves it... for about five minutes at a time. But I think that's the way most toddlers roll.