@skysayl I can’t say for sure, because I guess we don’t imagine the same things - where you imagine overwhelming full-body sensations, I focus on small, localised sensations on my body, mostly my hands, chest, and, well, privates. My hands are really good at getting those “phantom” sensations by pure imagination…
But having external stimulis never hurts! I found this stress ball squishy thingy, but in a different material than most, it’s NOT the jelly ones, I can’t explain but its texture is leathery/smooth and it doesn’t squish as much, like it offers some kind of resistance. If it was doll-sized and shaped, I would definitely use it to get the imagination going.