I stopped working 9 years ago mainly due to a neurological condition then developed OA in my left elbow because of the extra stress on my joints (crutches, wheelchair) I think the right elbow is going the same way..
I always wanted to go to art college but at the time teachers/careers advisers advised against it.
So as soon as I had all the free time I worked with stone (ouch!) then some clay, now I've just started using wax with the intention of getting it cast in bronze. If you look up Castle Fine Arts Foundry - Free Wax, they'll send you a small block of free modelling wax by post and if you like what you've made, you send it back and they'll cast it in bronze for the introductory offer of £75!
Don't be put off by the hardness of the wax, if you chop off little bits at a time it soon becomes workable in your fingers.
Big Cat - about 3" tall and 5" long (ok, not so big)