Guitar's an awesome add to the showcase so I can't blame others if they want to have a guitar. Guilty here. Lol. But anyway some are right too that guitar doesn't help on anything esp. on stats. Get a hottub instead. (That hottub's very hard to get on my part)
PimD money is worth nothing also. But it actually does something for you on this app. As for scavenger items they do nothing for you on this game.