"The Homestar Spa is one of the latest additions to Sega toys’ Homestar range, a set of powerful toy planetariums, which have been around for ages, but are nonetheless absolutely awesome. One of the cool things about it is that if you get bored of the standard planetarium, you can switch to a different setting that lights up your bath with different colored fish or a bouquet of roses."

Price: $70 USD

http://www.environmentalgraffiti.com/green-living/amazing-japanese-light-ball-universe-in-your-bathtub-pics/1298