Hardpoint on the Skin
I was thinking earlier about fingernails.
People use their fingernails to do a lot of really cool things. Some just paint them, but others like to do things like glue little jewels and the like onto them. What if you could use your nails as a place to mount a temporary thing, like a magnet or something? If you glued a magnet on, and it vibrated, would you be able to feel it?
I think this might be a cool way to introduce my friends to magnets without freaking them out. What do yall think?