Cool life hacking tip: taking snapshots of the inside of your fridge when you are out shopping will help you remember what you need the next time you shop. This can however prove tricky if you don’t have a 2D fridge; you might actually need a video as this sounds quite complicated! If you live on the fifth floor, and you are coming from the groceries with stacks of shopping bags, this simple fix will save your hands from the pain of holding plastic bags.