Most notable in the slavic world was the use of the Bardiche as a standard weapon used by militia soldiers throughout eastern europe as a type of analogue to the Halberd. I would not refer to the Bardiche, a long hafted axe with a curved half-moon style blade, as an agricultural weapon, but it was certainly the standard weapon among peasants during the 13-18th century.

Unfortunately I cannot speak to the weapons of Scandinavia.

I guess axe and puukko (bowie knife) could count as tools that were also used as a weapons. Oh, and there was the Nuijasota, Cudgel war where peasants wanted to overthrow the nobility. Finnish Wiki mentions axes, bear spears and crossbows as the most used weapons, where English Wiki says they used cudgels, maces and flails.

Edit: Fun fact about the karhukeihäs, bear spear: the best bear spear was made of rowan that grew from an anthill. That's because bears ate the ant eggs, thus the "honey paws" (Finns respected the bear so much they couldn't utter it's true name, much like Christians say "Lord" nowadays) blessed the rowan.