Building something is ALWAYS an excuse to get new tools!!
Putting in my new coop has resulted in a new compound miter saw with a custom table, a new cement mixer, and a framing nail gun. And DH keeps mentioning that his compressor needs replacing.
We've used the cement mixer to pour the foundation, the saw to cut the form lumber, and will be using the existing table saw to rip the used lumber we have to correct dimensions, the miter saw to cut them to length and do the angles, and the framing nailer to put them together this weekend. Trying to do all that with hand tools, even with a circular saw, would take so much longer and be soooo frustrating.