Luke Iseman makes stuff, some of which works. He invites you to drive a bike for a living (dirtnailpedicab.com), stop killing your garden (growerbot.com), and live in an off-grid shipping container (boxouse.com).
Here’s a detailed Instructable on building a single-wheeled bike trailer, very similar to the $300+, critically-acclaimed B.O.B. trailer systems, for...