Magnetic tipped screwdrivers are handy for keeping a hold on smaller screws, especially in tight places where your hands can't reach. You can magnetize your screwdrivers by rubbing a magnet down the blade five or six times in only one direction. To demagnetize, rub the magnet in the opposite direction.
Perennial mints, including spearmint, applemint, and peppermint, are very vigorous and can become invasive. Rather than planting them directly in the garden, grow the plants in containers, then sink the containers into the garden. This will contain the roots and limit spreading.