Before Guitar Hero came along, people had to make do with air guitar, and I have to say that in my teenage years I was pretty damn good at it. My first axe would have been my elder brother's squash racket. Squash rackets make surprisingly good guitars; the neck is relatively long meaning you can do some serious fretwork, and it's especially good for doing that "drag the plectrum up the strings" routine, like the start of Stargazer. However, Squash rackets also have relatively small heads, so I soon graduated to the more widely used tennis racket. This would have been a cheap wooden racket from Woolworths (a.k.a. the "Winfield Stratocaster"), and it was on this that I perfected my technique. Note that when all this was happening, my ability on the actual guitar never really got past playing Smoke on the Water and Whole Lotta Rosie on one string.
Air guitar was once a serious business. In 1982 there was even the Ad Lib Air Guitar Contest, held at Camden Palace, with judges including Pete Townshend off of The Who, Andy Summers off of The Police, Rick Parfitt off of Status Quo and "Fast" Eddie Clarke. Fast Eddie had just left Motorhead and was presumably available for weddings, bar mitzvahs and these types of events. Come to think of it, he probably still is. Anyway, the winner was Jean-Francois Desbled who won, ironically if you ask me, an actual Vox guitar and amplifier. I hope they asked him to play it.