my show jacket for £10 off ebay! and my english leather clincher headcollar from hickstead for £15 last year, the person on the store didn't realise it was a £50 one and I wasn't going to correct them!
if you're talking about little things that didn't cost much and make my life so much easier... Supastuds travel studs. do them the night before event after washing horse, then just swap for bigger studs at the event. no more trying to clean out and re-tap holes in a dancey-about horse.
umm, brilliant bargains... can't remember any. oh dear, i must be a right mug!