It turns out I am quite forgetful. This was made obvious through my travels, as I tended to forget many a thing in various places. Fortunately, none of them were of great importance, but for my own and others' amusement, I made an incomplete list. Being forgetful, I of course don't remember everything that should go on this list. :)

Cell charger

I've forgotten this item twice while in Canada, as I typically leave it plugged into an outlet of one of my friends' places. Fortunately, I have a backup, since both my phones use the same charger.

Pants

During my trip to Europe in August '99, I forgot to bring a single pair of pants -- I washed all my jeans the night before, and simply neglected to pack them. Having only shorts proved to be annoying with the cold German and Hungarian nights. Fortunately, I was able to borrow some long underwear from John Gilmore, and then traded a pair of shoes for a pair of jeans with someone I met during my trip.

I actually repeated this experience during my trip to Tokyo in December '01, discovering only after arriving that the only pair of pants I brought was the one I was wearing. I was pretty worried, since being much larger than the average Japanese person, I didn't expect my odds of finding clothing that fits me to be very good. To my surprise, the first day we went looking we found 3 perfectly nice pairs that fit just fine!

Belt

Less than 45 minutes before I had to be at a reception for a wedding in Canada, I realized that the belt I needed to complete my outfit was still lying on the couch in Berkeley, waiting to be packed. Fortunately, one of my companion needed to make an emergency shoe buying trip; I dropped by a suit store during that time, and within 6 minutes was wearing a new belt out of the store.