My problem with the way I think is that i tend to think of what would be awesome, and not what would be realistic, or useful. While obsidian isn't found in Scandinavia that much, I'm sure there are lots of other basic weapons that would have been around. Clubs could be made from wood, and either stone or metal.
Okay, I'm going to just ramble for a bit on the possibility of daggers, a dagger on a belt could be used in defense in a sense that a shield can. When something initiates combat with the dagger wielder, the dagger is drawn, and equipped to a hand, (if there is something in that hand at the time, it is dropped) automatically. When something charges the player, the knife would be used as a weapon, injuring the attacker, and possibly scaring them away if they are an animal. If I recall correctly, some cultures did hunt by using daggers to let boars impale themselves. I also know that bear hunting used to be done by simply stabbing the bear in the spine with a knife. If daggers were used this way they would nbot only provide a way for new characters to keep boars and bears from being to bad, if a bear runs away, it can't camp a body. a drawn dagger could also be used as a weapon, possibly acting like a sword. This would be a way for new characters to defend themselves, and also possibly hunt foxes. It would give a use to belts, and add more variety to the game in general.