Jen had something that could make things hot fast, but she didn't have anything that could get things cold fast. Why not replace the first one with the second one? Reaching into her microwave, Jen took out the part that made... microwaves (magtrn)- creating a box with buttons and a clock. Then she took out another magtrn.
"A convenient household utility to make things cold at an alarming rate?", Jen asked herself.
"Yes!!!-- Introducing... the macrowave freezer!" (microwave - 2magtrn = macrowave), Jen replied to herself.
Jen put a glass of water in and turned the device on, it worked by the process of "macrowaves" being emitted and taking energy from water molecules. Although it takes more energy to emit a macrowave than the energy you get out from putting it through water, so you can't give energy back to the electricity companies, not unless if you were to macrowave a cup of hot water, which has more energy in it.
After running for about a minute, the glass of water had become frozen. Jen looked around her house with an appraising eye. She really had made the place a piece of shit.