The worst item I took on my recent trip was a Throttle rocker. It is the cheap plastic lever you clip on your throttle and rest your wrist on. It saved me from a few cramps when I was cruising down the highway at speed, but it just about caused two accidents in traffic when I bumped it going for the brake. It caused my bike to accelerate and buck like a bronco.
Better invest in a throttlemeister or Kaoko.
2012 R1200GS "RALLYE"
"What would you attempt to do if you knew you could not fail? "
(On a plaque given to me by friend, Jeff Walker - gunned down in the Trolley Square shooting spree Feb. 12, 2007)