S&S Thunder Tube
Brand: S&S
Ga-Booooiiiiiinnngggg! The manufacturer calls it the Thunder Tube" We call it indispensable for the amateur Foley operator
It's a 7" long x 2-1/2" dia PVC tube with a resonant head at one end attached to a 17" long x 3/16" dia extension spring
Shake it, scrape it, wiggle it, use your palm to muffle it and you generate creaks, deep warbles, rumbles, weird heterodyne-ish gong effects, wa-wa's, rude noises, and, yes, realistic thunder