For years now I've had an idea for a product. It's a globe that is actually a spherical LCD display that shows the Earth. On the stand there's a slider for year, so you can choose to see what the Earth looked like at any point in human history. Buttons control what you want to see: National borders, cities, terrain, population density, etc. There's also a toggle for which planet you want to see, with every known planet and moon in the solar system available. Optionally the globe can be connected to the Internet for automatic updates to keep all the information up to date.

I have no idea if the product would even be possible to make. If anyone want to try, you can have the idea for free.