I noticed that there is no where on this forum for "off topic" discussion. That's rather unfortunate, because there is a kayak I've been looking at since I became interested in the Hobie kayaks last year. The origami-style folding kayak was designed and went into production last year by Oru Kayak. The thing is 25 pounds and folds into itself to make a nice sized box to carry around.
Here's the original -- https://www.youtube.com/watch?v=IH7m20x_Mjk
But here's the homemade version, which supposedly weighs less than 6 pounds, and can be made for only $30 -- http://www.youtube.com/watch?v=CknJyvWEaHg
I'm much more inclined to build the homemade version myself *and* buy a Hobie yak, because I can't make a Hobie.
EDIT: Fixed link to original Oru Kayak