I was pretty much amazed when I found this tutorial of how to build a recumbent trike from bamboo poles. As same as when I saw another tutorial about making a recumbent seat from plywood, which was not onlyabout the seat itself but also about how to make a steam machine at home. Quite impressive. Bamboo bicycle frames start to be popular and also few recumbent bikes has been build from bamboo already. I have seen at least two of them during the Annual Czech Recumbent Meeting. So if you want to see those two tutorials click on two links here under.
bamboo recumbent trike:
plywood recumbent seat:
And here is a video of how the trike looks like. Amazing!