I remember from playing Heroes of Might and Magic that "few" is 1-4 and "several" is 5-9.
Context: in HoMM, a turn-based strategy game, you can see wandering "armies" in the world map, but cannot see the exact number of units in these armies unless you spent some points in scouting. What you do have is a verbal description of the army ("several trolls", "lots of faeries", etc.).
Those words always seemed the most fantastical to me
Maybe 'quite a few'?