Useful, or useless
Following on from TonyR's 'Can't fly without them' thread, what the most embarrasingly useless thing you've ever bought and what item is the most useful?
My most useless purchase was my first kneeboard. (£15) I strapped it to my left thigh, it was supposed to open to the left but the cockpit structure prevented it. The PLOG was on the left side too. I ended up ditching it and adapting a hardboard clip board (£2)
Most useful purchase were a pair of headset tidies. They consist of a block of rubber with two holes in it and a strap which ties round the leads. The connectors go in the two holes which stops them tarnishing, the leads wrap round the headset & a clip on the back of the rubber block holds them in place. They cost about £5