What to do with partly used sheets of labels

Every so often I need to print a label or two for an envelope or parcel, so I end up with several sheets with the odd label missing. Rather than waste them, there's a nifty little freeware utility called pearLabelizer which makes using up the whole sheet a breeze.
pearLabelizer_screenshot

It even integrates with Address Book, supports drag 'n' drop addresses and comes with a range of pre-defined label layouts or build-your-own, and allows you to pick which specific labels on the sheet to print to.