Photograph your fridge. The thing you're about to throw away gets a price tag.

i do not need a spreadsheet, i need one arrow pointing at the bag of leaves. photograph the shelves and it rings the single thing that is going in the bin this week and hangs a price off it. mine was a bag of spinach and £2.20, which is not a lot of money until you notice it's the fourth week running. image version of mel's fridge read.