I'm so sorry to hear that you can't cross stitch anymore Annie, I do know how much you enjoyed it. I've just been onto my friend Mr Google (!) and there are loads of aids which could help you in another hobby. Special easy use scissors, a vast selection of pens/pencils with different grips-all sorts of things. Go spend a happy afternoon on Google and order some items that will help you. The scissors are a must I would think for many hobbies. Have you ever done long stitch? Can do these in wool with darning size needle if you could manage that, or what about tapestry on a floor standing frame so you're not having to hold your work? You would need a biggish picture to fit a floor frame, but that's all to the good as they tend to use wools and have a bigger weave therefore a bigger needle. I have to confess I have a disembodied cat's head on a floor frame which has been sitting for years-just haven't got round to doing the rest of it! I was also given a beautiful Kaffe Fassett cushion kit which is unopened.
I do hope you find a hobby that you can enjoy.