Today, I built a cupboard. First, I took all the pieces out of the box, and made sure they were all there. Then, I removed the cat form the shipping box, and put the styrofoam spacers in. Then, I started unpacking pieces from the plastic wrap, one at a time, as needed, and laid them out on the floor. Then I removed the cat from the shipping box, and threw the plastic wrap in the box. Then I removed the cat from the parts I was assembling, and screwed the first pieces together.
Then I removed the loose screws from the cat, and made sure they were tucked in the plastic bag where they couldn't be batted elsewhere. Carefully following directions, I built the left side of the cupboard, then leaned it against the wall and built the right side. Then I removed the cat from between the panels and the wall, so I could stack them a little closer for more space while building the doors.
All was going well (aside from the dirty looks from the cat about the shipping box filling up with not-cat objects), until I reached the magic moment, putting on backing panels, when the cat realized he was no longer looking at a stack of strange-smelling objects, but... A BOX.
The Sudden Feline Revelation meant that work slowed dramatically.