I need to borrow a trailer!

I managed to get some batteries running for my bike stereo and will be re-soldiering the wires tomorrow, so the tunes are covered. Now I just need to borrow a trailer to haul it in. If anyone has a flat trailer (not one of the molded plastic ones) that they don't mind me using for an evening, drop me a note. I'll also need the mounting bracket if it's anything other than a seatpost clamp. I can pick it up, drop it off, and will buy you beer for your troubles.