Haunted Key Deluxe (Gimmicks and Online Instruction) by Murphy's Magic - Trick
[HAUNTEDKEY_DELUXE]

I have learned to keep my elbow locked, and then it works best for me. I have not tried with invisible thread, yet, as my spool of black thread is about 40 years old, and when I cut a piece about 15 inch long, it is hard to separate about 20 strands, so that is on a piece of yellow paper waiting for me to unravel. Trick is not great, but good. Worth buying. I like it....