The Citibōt is a foldable kayak for city dwellers.  From the description:

Ever want a quality kayak you can easily store in your apartment closet or keep in the trunk of your car to throw into that beautiful body of water you happen to be driving by? Well, meet Citibōt.

You don’t know how many times I’ve woken up on a Sunday and thought, “You know, I’d love to go kayaking in the East River today.  Too bad I don’t have room for a kayak in my apartment.”  Problem solved.

Actually, kayaking around Manhattan is a popular attraction, but you have to be on the Jersey side of the George Washington Bridge by 6am.  It’s a major chore for me to be up at 7am on a weekday.