The Theme is: SUSTAINABLE

Modifiers:
Infinite - It just keeps going!
Resource - Something that can run out.
Reduce, Reuse, Recycle! - Use only existing assets or assets from previous projects.
Flashy! - Have a special effect (unity particle system for example).

Sustainable definition:
Able to be maintained at a certain rate or level.

Please keep all submissions inoffensive and SFW