A couple of weeks ago I bought this bun sponge twist tool on ebay for $0.99 INCLUDING postage?! Well I was prepared for it to be crap or a Nigerian internet scam but I am pleased to report it is neither. It is foam covered aluminium wire.
Start with your hair in a pony-tail.
Thread your hair through the slit in the middle of the twist tool and roll downwards towards your head. Then bend the ends of the sponge together, adjust your hair to cover the foam and voila! Bun perfection.
What was the last thing you bought for $0.99?!