This isn't exactly something I forgot to bring, but It's something I forgot to bring home. When I go on cruises, I really like to bring home a t-shirt from the ship but last summer I forgot to buy a Carnival Spirit t-shirt. I want one to match my Ecstasy t-shirt that I have. It's frustrating because the only place you can get them is onboard. My advice is to buy your souveneirs when you get on the ship if it's something you really want. Thay way, you won't forget toward the end of the cruise and be mad at yourself later. Also, some items run out before the end of each cruise, so get them early.