Dr. Meter Stud Finder | $16 | Amazon | Promo code CVDHM8AR
Graphic: Shep McAllister

Even if you don’t do much DIY work around the house, a stud finder is worth keeping in every toolbox, and this one is just $16 today with promo code CVDHM8AR (the ensuing dad jokes, however, are free). It even has separate modes for finding studs, pipes, and live electrical wires.