Let’s Fill a Time Capsule: What Goes In It?

A quick read of this article on a how a person ended up with their iPhone locked for 48 years has a quip referring to the device as it is now as a time capsule (should the owner wait 48 years to access their phone). That planted the seed of the idea for this thread.

We’re going to bury a container that does not exist in this reality for it is endless and cannot be filled to capacity. We can cram in as many items as we want to represent the time that we lived for a future generation to pour over and weep. The time capsule will be opened the same time that phone will be ready to unlock: 48 years.

What goes in the time capsule?