There is a peaceful camping spot located between a field and a forest. It is easily accessible and there are no restrictions. Just look for the signs that say "Hornusserplatz".
This is a quiet and well-marked location with little traffic. There was a dog walker and a cyclist passing by. It's slightly sloped, but with wedges, it's suitable for an overnight stay. The area above is used for a traditional Swiss sport called Hornuss.
The view is nice, but the parking space is unusual (there's a club right next to it with well-kept grass, better to park on the pavement). The way there was quite steep (especially at night with rain, a twisty dirt road). Okay for one night, recommended to arrive during daylight. We weren't completely sure if parking was allowed, but nobody approached us.