8.A 120-year-old glass plate negative that YouTuber Mathieu Stern found inside a time capsule and then developed, discovering this image of a long-gone kitty:
He then colorized the image so we could get a great look at what our feline friend from 1900 really looked it:
Here's the video of Mathieu opening the time capsule and finding the glass plate negative (and other cool artifacts):
9. A 32-year-old can of Sprite this person found in the ceiling of an old mall:
13. This voting ticket from the Civil War (early 1860s) this person found in an old book of Shakespeare — it'd been put there as a bookmark and forgotten: