We have one for N, Grandpa bought it for her for Christmas, it has a slot we can put three different "cards" in for different projections, also you can adjust the time and volume - very very handy Goes up to 20 minutes, we don't put it on every sleep, and not always at night, depending on how sleepy she is.

I did take it to Melbourne and to the Gold Coast, so that she had something familiar, while sleeping in portacots, think it made a big difference then as well.

Also good for if they wake up for a middle of the night play.... press the buttong and start it going, might hypnotise her into sleep