this is a cargo bike trailer for towing whatever and can be made on budget for like 10-20 dollars
-small bolts and skrews
-tub or cooler of some sort
-golf bag caddy (get them at thrift stores)
-drill (drill press best)
-something to bend pipe(vice and two people work)
Step 1: frame (golf bag caddy)
using a golf bag caddy as the axle/frame take the pipe and drilla hole thru it and the bag caddy and bolt them together. now bend the pipe to go around the back bike tire and to the chainstay (bottom pipe on tire fork for rear of bike). make sure it has room for you to make right turns with out hitting the tire.