Is there something you can buy like a lamp or toy that creates water reflections on the ceiling or walls?

I've searched the internet, but I can't find anything. I remember an old fisher price fake aquarium toy for babies that made a reflection on the ceiling, but there are none on ebay.|||at walmart, a nightlight that changes colors and sends all these to the wall and ceiling, i am sure they are probably available in other places to. the one i have goes off when the lights are on and automatically comes on in the dark.