The Fish 'n Flush Toilet Tank doubles as an aquarium. AquaOne Technologies, the folks behind this curiosity, worked with a marine biologist to make sure that in the course of flushing, no fish would be harmed. The Fish n' Flush, says their marketing director, was developed to serve "the dual purpose" of being "both a fully functional toilet and also a source of entertainment and conversation." Um, pardon me for being so conventional, but aren't conversations supposed to happen, say, in the drawing room or dining room? What are you supposed to do, gather your friends around the toilet? I imagine that would be a real conversation killer.