I get these boxes from the hospital. They contained implantable defibrillators. I glue in weather strip with adhesive backing. I coat the box surface where I want a strip with 3M adhesive and allow it to dry then stick the weatherstrip down. Holds like forever. Handier than handy.
http://i941.photobucket.com/albums/a...a0e055facf.jpg
I cut 1/2" foam to fit between the two halves and can stick jigs in there too, as shown. When the boxes are closed the foam sandwich holds everything in place, no rattles, no tangles. Cost....$.50 per box.