The Lav-Bullet, which is typically an American idea, is a stainless steel medical weight, shaped as a bullet, on which one must add an adapter with 3-point Lemo LB-LEMO adapter, and a lavalier connected to this adapter. Then one must bring down, thanks to Newton gravity, the ball in the garment of the actor (necessarily from top to bottom!). Ideal for loose clothing, the limit of its use is the sensitivity of the actor to tickling ! And it is totally ineffective in the space shuttle.
