A helmet aleft on a seat will someday fall. If nothing else is available, put it on the ground near the left foot peg. It won't fall from there.

 

On the rear left turn signal

 

this is a joke? ,,,,,,,,right??????

 

I made up a short plastic covered cable that you can see hanging off my right side saddle bag, in my signature picture. I store it thereto keep the lock from rubbing against any paint or chrome surface when it's not in use. I put my helmet over the sissy bar and run the cable through it to lock it in place.
Tom

 

No joke. just a rookie street rider looking for better ideas.

One thing I've learned is no matter how smart I think I am someone else always has a better idea. All I have to do is ask!

I like and appreciate the ideas!
Scott

 

outdoorgirl57 had a good idea of using a dog choke chain and small pad-lock to secure your helmet.
Small, compact, and especially inexpensive.
I have also seen the Harley bracket at the dealer, it looks simple enough as well