Two hundred years from now, we will all be gone. But our stuff will live on far past our own expirations dates. What would you want to leave for future generations to shake their heads over/marvel at/pity?
Make your selections (something technical? something cultural? some sort of confusing futuristic easter egg?) for what you would leave in a time capsule and drop them into the comments. Make sure to include an explanation of why it's worth the space, and why the future needs to see it.
Image: The Westinghouse Time Capsules, set to hold out for 5,000 years / Gary Dunaier.