For this project you will need:
-5 pieces of 10' 1'' PVC (it can be a different size then 1'' but if you do it to much bigger it could be hard to bend)
-PVC pipe cutters
-4 elbow connectors
-12 T connectors
-Some garbage bags
-piece of wood (for seat, you could use other stuff too)
-And lots of duct tape (I used around 7 rolls, but you might need more or less depending on how you wrap it. 3 of those 7 rolls were gorilla tape to make sure it was strong but you could probably use normal duct tape).
During this instructable I will tell you better ways to make your kayak than I made mine since I didn't have much of a plan while I was making it.