I though ROB did exactly what it was meant to do: get American retailers to stock a video game system (the NES) after the '83 crash. Though, if you really were itching to play Gyromite, stepping on the plungers ROB was supposed to drop the gyros onto, like AVGN did, or grabbing a friend, was less frustrating than setting up a cheap plastic robot that fumbled the gyros half the time.
The name Jogcon just sounds dirty. South Park dirty.
Every Wiimote attachment was stupid. The only one that did have some value was the zapper, but even most of the games that could have benefited from that either needed you to flail the nun-chunk around like a, er, nun-chunk, or mapped the fire button to the A button on top (and many didn't have an option to rebind buttons). I think Nyko made one shaped like a pistol, but it's useless since the two handed accuracy of the zapper was lost.
The purely asthetic plastic attachments were the bottom of the barrel, though. I wonder how many TVs suffered from flying plastic tat.
I can't remember any gimmicky peripherals I've really owned, but I do remember getting some infrared PS1 wireless controllers. Yes, IR, and no, they didn't work great even when they pointed straight at the receiver. Those were returned the next day.