If not a hat, then something similar to what EQ1 had, a trinket that boosted stats and the skill in general.For fletchers they could craft something like:
Grandmaster Fletcher's KnifeLORE ITEM NO TRADESlot: PRIMARY,SECONDARY,RANGE,AMMOSkill Mod: Fletching +5%Effect: Grandmaster's Satchel (Cast Time: 10.0)DEX: +10 CHA: +50 WIS: +10 INT: +10 WT: 0.1 Size: SMALLClass: ALLRace: ALLSomething similar would be nice, a recipe obtained with your artisan book at 50 that was lore and no trade. Smiths could get a hammer, tailors a sewing kit, woodworkers a chisel, sages a quill, provisioners an ez-bake oven.