When you are trying to figure out if you have enough seasoning in meat that is raw (burgers, meatloaf, meatballs, etc).
Heat a small skillet and spray with nonstick cooking spray and cook to test for flavor.
To bring a pot to a boil quicker, put the lid on the pot to hold in all heat.
When oven roasting vegetables, turn your face away when opening the oven as a large wave of heat expels when you open it.