I built my last bike trailer from scratch, but I had a full metal shop at my disposal, I was stressed out that I didn't have a bike trailer until I saw this baby stroller one Sunday afternoon in Notre Dame de Grace. when I was out looking at all the beautiful garbage that my upwardly mobile neighbors throw out.
Step 2: Strip
So I tore of everything I didn't need, which in this case means the front wheel and all the fabric.
Step 3: Et en plus
It pretty much looked like a trailer at this point, but I thought a bed would be useful, so I found some boards and screwed them onto the frame. Man, whenever I upload photos to Instructables they show up overexposed, do you get that too?
Step 4: Rear front fork
So, as promised, here's the only interesting part of my Instructable. I never really liked the long curvy bar or straight bar to the seat post methods of attaching the trailer, for my first trailer I built something that was a lot like a bike fork, tied and bolted to the frame around the back wheel, this time, forced to think due to a lack of resources, I just grabbed an extra front fork and bolted it to the back.
Step 5: Fin
So now you're ready to carry around all that heavy shit you've been finding. Like home made furniture made from doors and windows, and scrap metal. One thing that would help is a kickstand for the front of the trailer, as it tends to tip the bike over with its weight. I'll get around to that eventually. Bonne Chance!