What's your oldest personal artifact?

I’m not talking about an old coin or a family heirloom or whatever.
What is the oldest object that you acquired/purchased as a personal belonging, that is still in your possession? Could be an old toy, item of clothing, etc.

For me, it’s a pair of excellent office scissors. I got them in first grade! I remember being so happy to be trusted with “real” scissors rather than those horrid plastic scissors they give to little kids, that don’t cut anything. 16 years of school later, they are still clean and very sharp, and they have amazingly survived 4 moves! I use them just about every day.