Never mind singing, how about studying in the shower? With various subjects and even languages to choose from, your bathroom could turn into a study hall. You can keep your vocabulary fresh, your knowledge of geography up to date or even just memorize the NYC subway system which always comes in handy...
Check out the foll roundup on: Apartment Therapy New York




Habitat also do a World Map shower curtain:
http://www.habitat.co.uk/fcp/product/browse/Shower-curtain/952825
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