Floor ruler
No need to scramble for a ruler every time you have to measure something big. Draw a ruler on your shop floor with a permanent-ink, felt-tip marker. It won’t be accurate enough for precise measurements, but for rough cutting it will save you time and effort. When the markings start to wear off, just redo them. — Christine Smith
Trapeze clothes hanger
Here’s a quick way to add another clothes rod in a closet. It’s especially useful in a child’s closet, because you can easily adjust the height to accommodate a changing wardrobe and a growing child. Use lightweight chain, attached to both the upper and lower rods with screw hooks. Squeeze the screw hooks closed with a pliers. — Jim Shephard
Hollow door fixer
If you have a sizable hole in a painted hollow-core door, here’s a quick way to fix it: Completely fill the hole with spray foam insulation so the foam is about level with the door surface. Allow it to dry overnight. The foam will expand slightly as it dries, forming a slight mound. Slice off the mound with a razor knife so the foam is slightly lower than the door surface. Apply one or two coats of drywall compound, sand it smooth when dry, and paint. — Richard Loeb Jr