A little oatmeal added to soup will not only thicken it but also add flavour and richness.
Bulk cheese will keep longer when it's wrapped in a paper towel dampened with vinegar and placed in a sealed plastic bag. Re-moisten the paper towel every few days, as needed.
Never wash an oily pan. Instead sprinkle a little salt on it and keep it on stove till just hot. Then wipe with paper. This will clean the pan.