Here are some sample sites created with Bygga. You can browse each site online and download the .bygga file that was used to generate it.
Hopefully, this will give you some ideas on how to use Bygga. You can also use the documents as starting points for your own Bygga sites.
A blog/diary type web site.
A personal library catalog
Getting things done with bygga
Have you made a Bygga site that would make a nice sample document. Send it to firstname.lastname@example.org.