Mine is a watch. Two of my best friends from high school got married, and I was fortunate enough not only to be part of the ceremony, but to actually perform part of it (it was a very non-traditional ceremony). As a gift they got me an engraved pocket watch. I love it.

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“Sometimes I think we're alone. Sometimes I think we're not. In either case, the thought is staggering.” - Buckminster Fuller

"A man talking sense to himself is no madder than a man talking nonsense not to himself." - Guildenstern, “Rosencrantz and Guildenstern are Dead”