I now think the kids' new collars are the best thing since sliced bread.
I was downloading some photos from my camera, when Thommo starts nosing around in the waste paper basket tucked behind a cabinet. I called him out, but before he obeyed he got his collar caught on a door pull. He backs up fast, taking the cabinet with him, and leaving suspended in mid-air the processor, scanner, and camera. I throw my body in front of the cabinet, grabbing up the computer gear, and wedging the wheels with my bare toes - yelling "stand" with little effect.
Just before disaster struck, his quick release collar quick released.
Total damage - a broken lens filter, and a torn toe-nail.