Grocery cart trailer - this is handy as all get out for anyone, but this guy started this project with the purpose of making life easier for the poor/homeless population in his area. They can use these to help them cart recyclables, groceries, etc. Talk about using your specific set of skills to make a difference.
The Croozer Kid for 1 or 2 Bike Trailers are the few convertible bicycle Trailers that come complete with all conversion kits required. It is sturdy, sleek and built with quality material. I would consider one, if you like getting value for your hard earned money!