Say you need to make some quick edits to a photo or screenshot, but you're on a public or work computer with no image editors installed. Where can you turn?
Saikat Basu at MakeUseOf has a great list of different image editing projects you can tackle within Microsoft Word. You can give photos soft edges, cut out backgrounds, and even work with rudimentary layers. Obviously, it's not the most efficient way to edit a photo and you won't have the flexibility or power of Photoshop, but it can be surprisingly powerful in a pinch.
Saikat's tutorials are based on Office 2010 for Windows, but you should be able to find at least basic tools in any version. Be sure to check out his post for even more ideas and walkthroughs.