Spent 2-3 hours bicycling around all of Vågsbygd taking notes of the street signs. Nice and fresh air, pleasant temperature, quite hilly. In all a very good workout.
Now, arguably, these roads are not high priority or frequently used by anyone who's not already very familiar with the roads. I'll probably just go for Kristiansand center next, concentrating on tourist accommodation, restaurants, cafes and sights.
After that, Slettheia is a good candidate for road naming and a new 2 hour workout.