I have been telling an ongoing story to the nieces with them as the heroines. They've gone on all sorts of magical adventures and I've tied in different songs and myths. Most recently they are helping the Maharaj of Gunga Din in India to locate his stolen statue of Ganesh. I just happened to find an el-cheapo Ganesh statue at Ross's, so I'm burying it in the sandbox and they'll find it on a treasure hunt tomorrow after I've left. It starts with a letter from the Maharaj. Good times.