Along with other cost-saving measures, there is a resurgence of interest in do-it-yourself projects around the home and on vehicles. People are holding on to their cars longer and more likely to do repairs on them rather than sell, and the same goes for the home.
You’ll need some good quality air tools, as well as general hand and power tools depending upon the specific job. Shop wisely and keep tools costs to a minimum. One of the great things about tools is that they hold much of their value if treated with care. You can purchase a tool for a certain job, and then sell it after completion of the job and recover a good portion of the original cost if you’re not going to need it again.