Put a Lid on it

I mean that literally. If you need to boil water, make tea, or pretty much anything that is heated on the stove (except frying and one or 2 other things) put the lid on the pot/pan. When you put a lid on your pot, your liquids reach their peak temperature faster AND at a lower energy level. I have a gas cooktop, and what normally simmers at a 3 now simmers between 1.5 and 2 with the lid on. Boiling water boils faster, but make sure you don't forget it's boiling or you may end up with spillover. So, save your time and your energy dollars (electric/gas) and put a lid on it!