My Dremel holds first place, but a close second would have to be a pair of very soft foam packing blocks that measure about 8"x8"x18" I can lay a fuse across them on its back, on its belly, or on either side without the tail feathers or engine banging my bench. Sometimes I put them in the wing "saddle" area to rest the fuse on. I also lay a wing across them without servo or torque-rod interference. Can't tell you where to get them, I think they came in a box of computer components, but I can't remember. Just gotta keep your eyes open for those kinda things.