The Rugged Mount Torx T10 Security Tool Cover
If you lose the cap on your "Rugged Mount" Torx security crew, and you're worried that the tool itself is going to start scratching the paint on your bike, then you might want to listen up. My wife lost the cover on hers, so I found some small diameter tubing, the size I keep around to bleed brakes, and after making sure this hose was clean, I cut an inch or so off and put it on the end of the tool, leaving only about 1/16" sticking out the end.
That's all you need to lock the mount, and this way, it's really unlikely to damage paint or dig a hole in her pocket.
In fact this works so well that I've ditched the covers off my own two Torx tools, and put some tubing on both of those as well.
Why wait until I lose the covers to improve the tool? This way makes it much faster to take the Montana off its mount if I want to take a picture.