
Avatar cost like half a billion dollars to make and market—show your support by dropping $11 on replica RDA (Resources Development Administration) dog tags. It’s wearable of course, and you can even add in your personal details.
Product Page (£6.49 or $10.49)

If you wear flannel, live in a remote area and own a pickup truck, you should know that you are at high risk of alien abduction. Wearing these location Earth dog tags will help you explain how to get back home to the alien taxi service waiting outside the probing station.
Product Page ($13 via ChipChick)