This summer you can pay to get access to the SAS business lounges in Stockholm (Arlanda), Copenhagen (Kastrup) and Oslo. In the period from May 16th to September 30th you can pay 219 Kroner (about 36 USD) per person to get access to these lounges but you need to have a ticket on SAS, Widerøe or Blue1. So if you have a long wait it might be worth it – you do get access to some snack and drinks at least