There’s an old magic prop/gag called the Doty Scope. The way I’ve seen it done is the magician has their back to the audience to not see something. Then a periscope with a eye at the end pops up over your shoulder and the eye looks around. I think that’s how its intended to be used, but I’ve never owned one to see the instructions.
I have a use for the gag, but they’re not currently being made. I decided to make my own little one. There’s not much to making a simple one. I used a Eyeball Finger Puppet and a mechanics extendable mirror to make one.
Construction is pretty easy. Cut a slot in the eyeball so the mirror fits into it. Shove the mirror in and then glue it in place.
This will fit in the pocket of my vest. During the trick I turn my back and while my back is towards the audience I extent it and have the eyeball pop over my shoulder. I then rotate the handle a little bit to make some motion to make the the eyeball appear to be looking around.
That’s it, easy to make and do.
-Louie