Remember in Spinal Tap when they turn up their amplifiers to 11? You might think it’s just a funny gag, but rumour has it if you do that too many times you’ll turn your amplifier into a mischievous demon. Bionicle builder Mischief has seen it, and rendered its likeness in LEGO bricks And what LEGO bricks: the gaping maw hiding the speaker is a goal net, and the design of the quarter-inch jacks using tyres is fantastic. What tricks will this amped-up poltergeist get up to? Creating an annoying feedback hum? De-tuning guitars? If Spinal Tap are to be believed, it has a propensity for blowing up drummers…