Duck tape is just decorative duct tape. It's popping up everywhere now. Kids are making all sorts of nifty things out of it...wallets, purses, hair accessories, flower pens...But I wouldn't call it the best invention ever...I'm going with BEER.
Duck tape is a great invention, but it is not the best. The best invention ever is the toilet, because I cannot imagine a city without it. The little things we take for granted are very important and a toilet is one of them.