When you go shopping in the likes of Coles etc, you usually find on the back of the receipt some 'shop-a-docket' vouchers. Most are in the 'whatever' category, but frequently there will be one that looks interesting, but you only get half of it. Sort of like when you drop toast it always lands butter/jam/vegemite side down!
Anyhow, in case you didn't know you can go to their website and view & print *all* the current vouchers. Can be good if you're travelling as well, as you can scan for deals that are valid in the location you're planning to go to!