Attach a lid to the box with two cheap hinges. Drill/cut two 2-inch holes in the front of the box in such a way as to line up the bottom of the hole with the bottom of the inside of the box. Paint the box with any outdoor rated, oil based paint. Place a small piece of fine plastic screen against the holes that were drilled/cut. Make sure that you place the screen on the inside of the box. Firmly nail the screen into place. The screen will allow the box to drain, but will not allow the worms to escape.

The box is now complete.