Easy mod for a Duncan Butterfly?

I know there are tons of posts like this but is there some kind of easy mod to do to a Duncan Butterfly? Something with generally easy to find materials? Thanks! BTW Its the new one with cheap plastic

There hundreds of things you can do, what i did was i took a little metal washer and heated it so i could open and close it then put it around the axle. But if you want something even better you can try to glue/ attach metal rings to the outside