A magic wand about 10 cm long is impaled on a large safety pin.
You press lightly against one of the ends of the magic wand - and "click": The wand penetrates the safety pin's shackle.
It looks crazy - almost "magical" - but it is neither of those things; it is pure physics.

And it can be repeated over and over again for your incredulous, amazed audience...

A really great thing - you should always have it in your jacket pocket.