I know! It's a Booda Dome, not to be confused with the Booda Dome with steps. It's available at some pet stores and online for about $30. I like it too.
Don't want to do that if at all possible!!!!! I REALLY like the bucket ideas, and that's my backup plan if I can't find the Booda Domes on sale. This project can't get out of hand money-wise, as I'm also building a Tiny Home, and need to get a roof on!
Thanks for posting this, as these will be my new nesting boxes. I have to walk in to get eggs anyway, plus I want my hens to go broody and these will be perfect.