This is a list of 121 items missing from creative. There might be more but as of now this is the list.
Hunters Cloak
Propifier
Grabitron
Chrome Splash
Friendly/Enemy Bot Grenades
Buried Treasure
Tent
Dill Bit
All Madallions
All Boons
Howler Claws
Spiky Stadium
Blitz Rocket Ram
Icy feet
Alien Jetpack
Reality Seed
Alien Knockgun Launcher
Storm beast’s Pom Poms
Klomberry
Revive Grenade
Instant Shield (Ballistic)
Zapper Trap
Plunger Bow
Burger
Tomato
Kingsman Umbrella?
Stw Weapons?
Chapter 1 Season 1 Bounce Pads
The Storm Tracker
OG Heavy Shotgun
Clinger (Rare/Epic)
Bandage Bazooka (Rare)
Dynamite (Rare/Epic)
Proximity Mine (Uncommon/Epic)
Jetpack (Rare/Epic)
Beat Blaster
Sunburst Gauntlet
Red-Eye Smg
Cinematic Paint Launcher
Locator Flare
Blade
Blitz Grapple Blade
Blitz Kneecapper
Reality Seeds
The Wall (Balistic)
Crash Pad (Epic)
Creepin’ Cardboard (Rare/Epic)
Holiday Presents (Mythic)
Port-a-Fort (Epic)
Ballistic Med-Mist
Chug Splash (Epic)
Snowballs
Water Balloon
Decoy (Epic)
Shield Bubble (Epic)
Shockwave Grenades (Mythic)
Stink Bomb (Epic)
Portal Device
Storm Beast’s Pom Poms
Grappler (Rare)
Boogie Bomb (uncommon)
Ball Transformation
Choppa Parts
Tire Transformation
Getaway Jewel
Forecast Tower Access Card
Solunar Key
Underground Keycards
Blitz Pump Shotgun
Kinetic blade (Legendary)
Enhanced Striker Burst (Mythic)
Self Revive
Reforged Infinity Blade
Hoprock Cube Rifle
Morphite Assault Rifle
Morphite Heavy Assault Rifle
Unstable Element
Enhanced Tactical Shotgun
Morphite Tactical Shotgun
Morphite Pump Shotgun
Cube Splitter SMG
Morphite Submachine Gun
Finger Guns
Morphite Hand Cannon
Suppressed Sniper Rifle (Legacy)
Golden Firework Flare Gun
Shrub Bomb
Smoke Cloud
Friend Zone Bubble
Legacy Tac Ar (Rare, Epic,Legendary)
Striker Burst Rifle (Unmodable)
Thermal Scoped Ar (common, Uncommon)
OG Ar
OG Burst Ar
OG Drum Gun
OG Light Machine Gun
OG Minigun
OG Scoped Ar
OG Thermal Scoped Ar
OG Double Barrel
OG Tactical Ar
OG p90
OG Submachine Gun
OG Suppressed Submachine Gun
OG Tactical Smg
OG Duel Pistols
OG Hand Canon
OG Semi-Auto Pistol
OG Suppressed Pistol
OG Bolt Action Sniper
OG Hunting Rifle
OG Semi-Auto Sniper
OG Rocket Launcher\OG Grenade Launcher
OG Bandage
OG Chug Jug
OG Shield Potion
OG Small Shield Potion
OG Slurp Juice
All the Sprites (As items)
Harpoon Gun (1 damage Version)
OG Jetpack