Collector Items
Collector Items are Hats or Body Attachments that are created when a regular item is crafted with a Collectors Stone. These items can be leveled up to unlock new and exclusive Rare Effects. To level up an item, you can craft 5 normal items together with the Collectors version for 1 level up until level 12, or you can craft it with Rare Items of the same type. When adding Rare Items, each tier will give a different number of levels: Tier 3 will give 1 level, Tier 2 will give 2 levels, Tier 1 will give 3 levels, and Golden Cask Effects or Exclusive Effects will give 5 levels. As you level up the item, you can change the effect by using Charges that are gained by leveling up an item. You can give an item unlimited charges by crafting it with a Sigil of Immortality. You can level up an item infinitely with no level cap, however you get the final available effect at level 120.
Available Rare Effects
Level 4 - Massed Flies
Level 7 - Green Confetti, Purple Confetti
Level 10 - Notes, Sparkle
Level 12 - Orbiting Nuts & Bolts
Level 13 - Orbiting Planets
Level 14 - Orbiting Shells
Level 17 - Bubbles
Level 20 - Daze
Level 22 - Circling Peace Sign, Circling TF2 Logo
Level 24 - Circling Heart
Level 25 - Smoke
Level 26 - Steam
Level 27 - Storm
Level 28 - Blizzard
Level 30 - Rainbow Sparkles
Level 32 - Golden Glow
Level 34 - Green Bubbles
Level 36 - Scary Storm, Blood Storm
Level 37 - Harvest Moon
Level 40 - Confetti Party
Level 41 - Orbiting Fire
Level 42 - Orbiting Dark Fire
Level 45 - Orbiting Full Moon, Orbiting Jack O' Lantern
Level 47 - Blue Fire
Level 49 - Red Energy
Level 50 - Stormy Notes
Level 52 - Knife Storm
Level 55 - Vivid Energy, Dark Energy
Level 57 - Vivid Plasma
Level 59 - Searing Plasma
Level 60 - Gambler's Demise
Level 63 - Green Energy, Purple Energy
Level 65 - Ghosts
Level 67 - Scorching Flames
Level 69 - Burning Flames
Level 70 - Vivid Blizzard
Level 72 - Sunbeams
Level 75 - Lover's Curse
Level 78 - Scorching Bubbles
Level 80 - Red Plasma
Level 85 - Fire Storm
Level 90 - ZAP
Level 95 - Phosphor Cloud
Level 100 - Soulless
Level 105 - Overheat
Level 110 - Intensity
Level 115 - Euphoria
Level 120 - Holy Light