What to do with old wheels?

In the summer I wore out my first set of wheels, a set of Mavic Ksyrium Elites. The freehub needed servicing / replacement, and the brake tracks were also worn, and as they were 6 years old and full of Mavic proprietary parts, I was advised it wasn’t economically sensible to put them back into service, so I replaced them with a handbuilt set which will be more serviceable in future. I now have some Ksyriums knocking around taking up space I don’t have.

They’re not usable (as wheels) but is there anything more useful I (or someone else) can do with them rather than just take them to the tip?