Oh, diapers - truly they are the most guilt-inducing thing about being a parent. Pick cloth ones and have to deal with the enormous hassle of cleaning them, plus knowing that you're wasting energy and using toxic chemicals to get the poo out. Pick disposables and you're contributing to the growing landfills that dot our great nation. And don't even get me started on "elimination communication." A new parent has enough to worry about without having to buy diapers, which is why I recommend flipping them some gift certificates to diapers.com, by far the most cost-effective place to buy the damn things anywhere. Throw in all sorts of other baby supplies and you'll be able to take a load of mom and dad's mind when they need it most.