One I came about recently that I didn't realize everyone did was use my Turkey Baster to remove the fat from my Ground Turkey or any meat while cooking.
My electric tea kettle has become our best friend, we use it all the time for simple foods such as making Stove Top, Instant Mashed potatoes, Oatmeal and so many other things. No need to waste time withe stove or microwave.
I use my vaccuum cleaner to help me clean my stove to suck out any crumbs from under the grates before I scrub.
Freeze left overs into individual portions for an easy lunch.
I'm sure I have many more ideas.