Sandwich-bag small-parts keeper - This is built out of a 3/4-in.-thick scrap of plywood. Start by cutting two pieces of plywood as shown. Draw lines 1 in. apart across the shorter piece with a square, stopping 1 in. from the edge. Now cut along the lines with a jigsaw. Screw the two pieces of plywood together and screw the unit to the wall. Fill resealable bags and slip them into the slots.