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

I keep a few old things that I still have, such as coins, notes, a tape recorder, a Walkman and a camera. However, they are not in good working condition anymore. I don’t actually use any of them in my daily life, as I have kept up with the times and embraced new technology. I’ve chosen to keep these items as memories. The only thing that I do use regularly and isn’t too old is a keypad cell phone, which I keep as a backup.