Oooh, that drives me nuts, too. (But then I am a bit of a speed demon when the mood takes me, so...)

Putting the jar of sugar back in the cupboard empty. Because then I go shopping and I don't know that we need sugar, and come back to find that we don't have any, and have to go back out again to buy a bag of sugar D:<. It's not that the supermarket is particularly far away, it's that I like to be home for good when I get home.