35 you can get at 34 · open one to see where

18 quests on the board here, banded 32–40. 4 upgrades within reach drop in the zone.
Razorfen Downs opens at 35. 3 abilities still wait at your trainer, under Abilities. 35 upgrades still out there, ranked under Upgrades.
Nothing within reach yet in Thousand Needles, Badlands.
Nothing for a hunter in Durotar, Undercity, Orgrimmar, Thunder Bluff, Warsong Gulch, Arathi Basin, Deadwind Pass, Swamp of Sorrows.