You could also stock up on other household items that you use, such as cleaning products, dishwashing gloves (if you use them), laundry powder, soap, bathwash & shampoo for you & DH, just anything you generally use around the house, I am about to start doing this, just getting an extra pack of sponges, scourers, rubbbish bags etc. Hopefully it will all add up and make being on one income a lot easier.

Good idea for a thread, there are a few things I will add to my list as well.