The business of predicting the future is a tricky one. But it's almost as difficult to imagine what life was like in the past. Today, we want to know what one item you would drop into a time capsule for people 500 years from now.

Would you leave behind something technological? Perhaps a book or movie? Maybe this is a good place to leave that carefully-curated collection of selfies you've been instagramming. (No, it is not. Do not do that.)

Start assembling your virtual time capsule (with a picture, please) in the comments below.