Un-Du

Nothing's more annoying than buying something only to discover that the sticker on it is really stuck fast, and trying to peel it off just leaves torn paper and blotchy smears of adhesive. Getting rid of this leftover adhesive can be a time-consuming chore, unless you have a bottle of Un-Du handy. This natural, environmentally friendly solution neutralizes adhesives temporarily, allowing them to be peeled off with ease, and then evaporates, leaving the adhesive completely usable again. That's just incredible! $8.99 USD. (Via Cool Tools.)