SpaceX Falcon 9 Lander - Try (and fail) to land Elon Musk's SpaceX rocket
ShareX - ShareX is a free and open source program that lets you capture or record any area of your screen...
Astronaut - You're an astronaut. Click to watch random videos in space.
Greenshot - Greenshot is a free and open source screenshot tool that allows annotation and highlighting using the built-in image editor.
Universal Paperclips - Make paperclips not war
LightShot - The fastest way to take a customizable screenshot.