I've been wondering why you US call things like this a Relic?
Below from Wikipedia:
A relic is an object or a personal item of religious significance. Relic is also the term for something that has survived the passage of time, especially an object or custom whose original culture has disappeared, but also an object cherished for historical or memorial value (such as a keepsake or heirloom).
Our closest parallel as we only use relic when referring to things like religious Icon's, is Artifact/artefact (or the made up word partifact meaning a broken piece). However, we still wouldn't use this term for that bottle top thing.
Can you explain to a dumb Brit?