The Chinese finger trap is an ancient invention that has cheated and astonished fun seeking people for ages, and yet is still doing the same to this date... Just watch the video from Star Trek.

The construction makes it so that once your fingers are caught in the trap, they can be difficult to get out again. The "trap" just tightens the more you try.  The legends say that it was used as a handcuff in the past.

Trick your friends: "Try to see if you can make your index fingers touch each other through this tube"

Use the finger trap as a demonstration of how to gain freedom in life ... (see video demonstration)

Or put yourself in the trap so your spectators can be sure you do not cheat in a magic trick...