Potatoes draw moisture and can cause your onions to spoil quicker. Keep onions in a clean old pair of panty hose, knot in between each onion and hang out on the porch. Put garlic in mesh bag out on porch also. I've had onions and garlic hanging outside on carport for 3 months and they are great as ever. They stay fresher a lot longer.
Potatoes can stay outside,too.
They will keep fresher outside. Buy fresh corn on the cob and take the husk off, wrap it in foil, put the lot in those plastic grocery bags, and freeze. After boiling beets for canning as pickles or as a vegetable, dip them in cold water in which ice has been added to make the skins come off easily. A quick and easy way to slice them is using a hard boiled egg slicer, slicing once or twice depending on what you will use the beets for later. Also a french fry cutter works wonderful too.