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

Episode 1:
Technology group is not available in episode 1.

Episode 2:
CD
Cellphone
Computer
Internet
Laser
Lightbulb
Nuclear Bomb
Rocket
Satellite
TV

Episode 3:
CD
Cellphone
Computer
Internet
Laser
Lightbulb
Nuclear Bomb
Rocket
Satellite
TV

Episode 4:
Technology group is not available in episode 2.