Gentlemen you are all wonderfully kind. After reading all your posts and good wishes I will confess that I had to go and have a little cry before I came back to write a reply.
My workshop won't remain idle as my daughter has as much of an interest in tinkering with mechanical things as I do myself. As well as that I'm still quite able to teach her the many tricks and techniques I've learned during the course of my life. My VeloSolex has been claimed by my daughter and she's presently working on all manner of ideas of her own devising. Yesterday I saw her with a solar panel in her hands and she was trying it for size on the carrier.
Something I do need to do though is sell off all the stuff I have hanging about which is just taking up space. As an example there's no point in keeping any of my old track bikes or road bikes as I can't ride them and some other enthusiast might as well enjoy them. I will be keeping the three wheeled cyclecar I started to build though as I'm hoping that on my good days I will be able to potter on with it.
Apparently some of the latest research on CFS/ME, which is the illness I have, indicates that it's caused by a viral infection of the nervous system. If there ever is a cure it is still a long way off. At the moment my pain is reasonably well controlled, but it's not being able to concentrate properly on undertaking physical tasks, having poor balance and being constantly tired that's the most upsetting thing. Taking any kind of stimulant medication isn't the answer as it will only work for a very short while and will quickly lead to a physical collapse due to exhaustion.
At the moment I'm keeping my hands and mind busy with crafts type things and if I get bored with that I've got my huge Lego collection to fall back on. I will be back again on the forum with all my former witty old world charm most probably once we start to move on into Spring and Winter is behind us.