Valve stabiliser for carbon road bike wheels

If you have carbon wheels and use long presta valves you will be familiar with the problem of valve rattle at higher speeds. No drama - just annoying.

This is an example of how it is simply fixed with a small stabiliser. This is precisely tailored for Bontrager Aeolus 5's - but I suspect that the fine details of curvature don't really matter a whole lot; for most carbon wheels it will probably work perfectly well...

If the fit is not snug enough for you - at least now you have the idea and can go and design your own!