Knee supports- nah: just get hold of your GF's tight's and if she aint got any nick some of a washin line
Seriously, I've got knackered everythin, pins, screws, plates, and the best thing I have is a cheap copper band. don't go for any of these magnet £90+ jobs, brop into Boots or local chemest and get one for the £8-10 mark. Damp/cold, typical Scottish, weather used to have me hobblin around all the time but not so much now...