Here is where you find very short (10-20 minutes tops), and pretty much one shot quests that have a reward of some kind that may or may not always useful.
@L26 Charms - 3 quests, total time 10 min, some exp.
Charm Crafting to learn to make the charms. The First Charm and Charm Caster Training to actually use charms.
@L20 Lomshir Supplies for Lomshir Craftsman's Gloves +18 Crafting Tool, Station, and Utility Use.
@L23 The Ambassadors Repair at Varyyn Dunes Outpost, 2 chunks below CIS, gives access to repair stone recipe.
@L22 Legendary Fiend Hunters Weapon reward is a crafting tool (of choice) with a small finesse and ingenuity 9 m buff.
@L30-32 Tonic for 2 items, one is Nelon's Tonic and very sadly a one time use potion, it is a 16m buff that provides +20 Reasoning, +15 Ingenuity, +15 Finesse, the other is Resource Transmutation Ring a daily resource collection.