Plane tickets to brisbane to visit my dad that I didn't end up using because of his situation at the time.... but that wasn't really a mis-buy, just things unfortunately didn't work out. I honestly can't think of anything big that I've bought for myself though, I've bought items of clothing that I've convinced myself I would wear, but never did. But they weren't that much money and not really a big thing. I'm not really one for splurging on new phones etc. I've had the same phone for 5 years now.