I just bought two (blue) camping mats at Walmart for $5.88 each.
They are a "waterproof " plastic foam kind of thing and come in a
roll from the camping department. The idea is to cut them into
smaller pieces and put them on benches or table where we rest our
arms or elbows as a cushion. Cheap and seemingly easy to do. It may
be flammable so it is probably best to avoid the torch or other
flames but it seems like it might help the ergonomics of other areas
without hurting the wallet.