Actually, I do have a question. What are some good or beautiful areas to camp freely in nature? Last time we mostly went to the Göteborg / Vänersborg / Ulricehamn area, just driving around until we found a cool lakeside spot to pitch our tent at. Do you happen to know good areas for that south of Stockholm?
Around Skåne, you could look up Mölle/Kullaberg on the west coast, Simrishamn/Kivik/Stenshuvud on the east coast, or Söderåsen somewhere in between. I'd check out lake Åsnen south of Växjö, but I haven't really spent much time there myself. If you're going up the east coast, you could make a small detour and see Öland. Or, driving up the east coast of lake Vättern from Jönköping to Motala and you will see lots of nice places. Closer to Stockholm, I'm actually not so sure where to go, except out into the archipelago. I can ask someone who's more familiar with the area.