You know - I'll have to get my mother's walker out and use it - she's gone now but I still have some of her home health equipment. I've used a card table that I cut the center out of for quilting - used big bull dog clamps to hold it on the sides but it's very low and hurts my back. Mother's walker is adjustable. Thanks for the idea and I hate thimbles too (except the little leather dots) so here I go to the duct tape.