The 5-sheets-of-plywood, shed-roof coop!
This is clearly a coop built by a new homeowner with no scrapwood pile... but them's the breaks and I wanted a coop! Here's what I bought:
12 cinderblocks
4 pressure-treated 2x4x8's
20 regular 2x4x8's
1 4x8 sheet 3/4" plywood and 4 sheets 1/2" plywood...