I simplified this scene a bit. Picture this: in our living room we have a heating vent in the floor next to the wall. There is a couch in front of the wall, but because of said vent, we can’t have it right up against the wall. We have two blocks of wood tween the couch’s back feet and the wall to give us the 6″ or so access needed. Tis a bit awkward but we do have enough space to squeeze a floor lamp behind there as well. And once the boy got mobile, he found himself itching to mess with it any chance he could.
How to keep him from going behind the couch? This summer I stumbled upon using my wife’s accordion case to block the entrance. That was great, until her over-educated indy band started rehearsing again this past fall. Now I just watch him (even more) like a hawk.
(Kidding aside, my wife’s band, The Gettysburg Pirate Orchestra, is quite fun. You can check them out here.)

Forget the lamp, mine would go straight for the cord…and what the cord plugs into.
Sure, but but will a cord smash into a a million dangerous pieces?