LBD - I like to use them to drill holes, cut with a jig saw, stuff like that. Slap them on any table and the front hook grabs on and drill or cut between. I have also used them to plane smaller parts with. The back lip grabs the material and keeps it from sliding off. I have also used them on my decks and the tailgate on my pickup, keeps me from moving clamps everywhere. Mainly keeps your project or whatever off the table so you have a little workspace under it.  Mike