Fresh from the wipekitty carries weird things files: Balloons!
My stepdaughter graduated high school yesterday, and I wanted to pick up a few things: posterboard, photos, and helium balloons. The closest place to get helium filled balloons is 4.5 miles away. I tied them to the front of my messenger bag, where they did remarkably well...so long as I was moving forward. I got quite a few strange looks on the ride home.
Incidentally, this is not the first time I've biked with helium balloons.