So I upgraded one of my bikes to a Fox and the other with a rigid fork and now I've got a couple of forks (Rock Shox Tora 318 Solo Air and Tora 302 w/ Turnkey) that I'm not using anymore.

I know these are mid to lower end forks but both are fully functional older model Tora's and I really don't want to get rid of them. Is there a preferred method of storing a fork long term?