Made by humans on Earth. Since 2003.
Patent Drawing for J. G. Krichbaum's Device for Indicating Life in Buried Persons

Safety Coffins

A golomyanka

The Golomyanka

Weather Station Kurt, on display in the Canadian War Museum in Ottawa

Weather Station Kurt

The 826 Valencia facade

826 National

Ice-nine (artist's conception)

Polywater

This is just a rabbit. It isn't even from Wales.

Hypercorrection

A yo-yo

The Yo-Yo