Neer bottles and batteries are not the only things that work as slides. Many years ago I saw Martin Mull (& his fabulous furniture) at the Troubador in L.A. (For those unaware, Mull had a music/comedy career prior to his acting). At one point Mull pulled out a woman's personal vibrator, (yea, one of those), and used it as a slide. He then turned it on and went into Purple Haze, looked up at the audience, and in a deadpan said so that's how Jimi did it! LOL
Bill, tgo