Small projects can be a good way to add value to a home, and they may make life easier in the long run. It would seem that any small project would require just a few tools and a little knowledge, but the most important fact is the knowledge of when to DIY instead of calling a professional. Every person has their own set of skills, and a small lack could lead to a big disaster.
Not all people are born knowing how to install a dishwasher or cover the walls with the latest fashion in wallpaper. Some of them are better off paying the price for a good handyman or experienced tradesman to get the work done. Others might have a few false starts, but they will be able to complete a project in a reasonable time with no safety issues or unfinished work when their project has been completed.