Depending on whether you have the Powerlock "V-cutter" or "Scissors" the easy option would be to add whichever of those you don't have in place of the blade. They both have their uses. If you need to strip small wire, the wire stripper is an option, or the #2 square (Robertson) drive screwdriver, but you might have to put the bottle opener on the outside layer for that. Everything else is already in the Powerlock, except the C4 punch and that's probably too "stabby-pokey" to be school friendly