Several ideas for side quests with different duration
Quest 1 - "Red glass"
The idea is to add to the map a few 2-3 remote, densely spaced locations-caves with red glass + 1-2 abandoned caves with red glass with bestial npc
in any city of the player must be able to meet with Forge-master, who should be able to make weapons and armor made of red glass
Red glass can be absolutely identical to the conventional green glass, but has a red color