I had one recently at WDW, and it's somewhat ridiculous. I always carry this old pocket comb that I've had since I was like 10 or something. I like it because it's made of a softer plastic than newer ones - not sure why, but it just has a better feel. In the early evening, after we rode Rock'n Roller Coaster I noticed it was missing, which was a little more upsetting than it should have been. We were over in Star Wars and I kept thinking about it and I was pretty sure where I had lost it. Earlier we had gone to watch The American Adventure and I had gotten something out of my pocket. It had to have fallen on the floor. Might it still be there? The Skyliner makes it easy to go back and Epcot is open later. I decided to go back - for a 50 cent pocket comb. I went to the last show of the night and made sure I was first. I found my spot and checked around on the floor. It wasn't there, but then I noticed on the seat next to me, on the hinge part, there it was! It seems ridiculous, but new combs just aren't as good. I've actually misplaced this one before, but only in my own yard. I was able to eventually find it then too.
Another kind of neat one is that my mom, sister, and I use to live with my grandparents in this house. Over the years, we moved, then they moved. When I started to look at houses this same one was on the market. I bought it. Interestingly enough, there was this collection of seashells left out back on a window ledge. I immediately recognized them as my mother's collection. They had somehow just stayed with the house through at least a couple of owners. Now they are mine and still sit there by the window.