Misery loves company, my friend. In no particular order of "dumbassness":
1. For almost a year, one of my bike keys rode on top of the foil engine to fuel tank heat shield, where it ended up after I missed the ignition switch with the key one day. (ALYWAYS carry a spare key with you). At the next valve check, it was sitting there waiting for me patiently.
2. One of my T/B sync nipples now contains a plug that was used to protect my manometer gages in storage because the plug that comes on the bike got sucked into the abyss.
3. Because I cannot control my stupidity, I now contain a full compliment of OEM fasteners that can be used to assemble the plastics, dash panels, etc. This includes metal fasteners (both shiney ones and black ones), and plastic fasteners (push pins, JIS quarter turns, clear washers, etc.). I have many of each, so if any of you find yourself on the road and in need, by all means please stop by.
4. And last but certainly not least, now as a matter of practice WITHOUT exception, Pants torques (with a torque wrench) EVERY single mechanical fastener when working on his motorcycle. Every time. No exceptions. Hopefully, there will be no more pumpkin drain plug incidents - that was an oldie, but a goodie....
(sigh).....
