I just encountered the same issue when I changed my air filter. Ended up with a grommet on the floor. After a quick "WTF" moment and wondering where the darn thing came from, I found out it came from the intake post. That bastard slips out easier than I thought it would!
Regarding hi-viz gear: "It's better to be seen and laughed at than not to be seen and cried over."
"Every motorcyclist starts out with a bag full luck and a empty bag of skill. The trick is to fill your bag with skill before you bag of luck runs out."