What’s the oldest thing you own that you still use daily?

Both sets were in position by the time I was born, which means they’re older than some of the other body parts in the skin bag I use daily. Except for one that’s a crown, and the four wisdom teeth I never grew – I take that back, there is a heart shaped incomplete wisdom tooth above one of my top molars – the rest are mine. Er, except for the baby teeth, which fell out at the appropriate times. It would be kind of awkward to walk around as an adult with two sets of teeth protruding from your gums, would it not? Maybe you would chew things more quickly, or maybe it would slow down the chewing process…? I digress.