Aside from the obvious, carrying your bike. What do you want it to do, and how much are you willing to pay for it? Serious question....think about it.
Well my wife took things in her own hands and bought this for me today. I guess I might have to keep her around for a while now, especially since it is in her name... http://bigbikeriders.com/photopost/data/500/5595smal_trailer-med.JPG