I think the only thing that has more variety than what we use for nests is what we use for coops. You are only limited by your imagination. Here are a couple of threads that show that.
Nesting Boxes
https://www.backyardchickens.com/forum/viewtopic.php?id=41108
Opas Rollaway Nest Box
https://www.backyardchickens.com/forum/viewtopic.php?id=287684
Nesting Boxes
https://www.backyardchickens.com/forum/viewtopic.php?id=41108
Opas Rollaway Nest Box
https://www.backyardchickens.com/forum/viewtopic.php?id=287684