The Tinkerer is a friendly NPC who is located above the Alchemist game in the daily quest portal. Every day the Tinkerer gives you 3 quests to do. The first two quests reward you with 1 orb, and the last one rewards you 3. The quests normally require you to bring him a piece of armor and a weapon. Upon completing his quests he will reward you with blue tokens which you can spend at the Alchemist. The Tinkerer is the only way to obtain the blue tokens.