Below is a list of all the available elements in the Tools group in Doodle God across all 4 episodes.

Episode 1:
Boiler
Firearm
Gunpowder
House
Hut
Poisoned Weapon
Skyscraper
Steamengine
Tools
Weapon

Episode 2:
Boiler
Firearm
Gunpowder
House
Hut
Poisoned Weapon
Skyscraper
Steamengine
Tools
Weapon

Episode 3:
Boiler
Firearm
Gunpowder
House
Hut
Poisoned Weapon
Skyscraper
Steamengine
Tools
Weapon

Episode 4:
Castle
House
Hut
Mechanism
Tools
Tower