There is no reason you could not change your lighting from top lighting to side lighting.
Oh I agree! There is SO many things that you can do with this idea as far as lighting goes. And bigger boxes mean bigger possibilities.
Just last night I was thinking about building a large plywood box with built in fixtures on all three sides to take better pictures of my adult birds.
The possibilities are endless, I just wanted to present the basic idea for everyone to share in! I hope to see a lot of people use it, as it is truly lots of fun. Perhaps that's just my artistic side coming out though....