We're always fans of building your own stuff and sometimes the tools in your toolbox don't fit the job. If you need to make your own, Homemade Tools is a website that shows off all types of interesting projects.
Homemade Tools essentially works like a repository for tools that links out to personal websites and forums with instructions. Because of that, the instructions themselves vary in quality, but most of them guide you through the process of making your own specialised tools well. You can also share your own, much like you would on a site like Instructables. If you've ever wanted to make (or share) your own tools, Homemade Tools is the place to do it.