A good hobby could be crocheting afghans and giving them away to the elderly in rest homes who are in wheelchairs. They use them for their lap in the winter. If you belong to a church you could get women to also do that with you as a group and have them all make one for Xmas that year and put them under the tree in the resthome prior to Xmas. Of course you don't make them the normal size, you only make them big enough to put on their lap and down to the ankle. That way the crocheting will not take very long to make them!