Thanks for all the ideas. Visionjohnny... now that is funny! I don't have my sissy bar on all the time so I can't rely on that. I have seen the handle bar end attachment, which I like, but I have one piece chromed grips on the bike. I just bought two new helmets and didn't want them to walk off. I will probably continue to just hang it on the bike for short periods of time but for any extended length of time, BanditSRT8's suggestion is exactly what I was looking for. It is small and can fit in a pocket if not needed but can lock one or both helmets if needed.
Thanks to everyone for the ideas.
2007 Victory Ness Jackpot - Loaded