My DH and I have also built nestboxes, but this last week and weekend, and next week.....we are putting on a roof! He is one of those who thinks we should do EVERYTHING ourselves! The wonderful problem is that our house is fairly large. We bought it in a foreclosure for the property more than the house.
Oh yes, I have also helped plumb, build fence, repair the car, and my least favorite, besides roofing was putting in the ductwork for central heat/air. Gotta love em!