Suggest a creative idea to complete the following task.
Task: Encourage people to save energy.
One creative idea could be launching an interactive community-based energy-saving challenge. People within a neighborhood, school or workplace could form teams to compete in reducing their energy consumption over a set period of time, using an app to track their progress. The challenge could incorporate different weekly themes such as "car-free week", "veggie week", or "lights-out hour". The Team that makes the most progress could be awarded prizes such as energy-efficient appliances or carbon credits. This game-like and collaborative approach could help educate and motivate people to make sustainable choices while having fun, and promote friendly competition and community building.
Complete the following task based on the instruction and optional input provided.### Instruction:
Suggest a creative idea to complete the following task.

### Input:
Task: Encourage people to save energy.

### Output:
One creative idea could be launching an interactive community-based energy-saving challenge. People within a neighborhood, school or workplace could form teams to compete in reducing their energy consumption over a set period of time, using an app to track their progress. The challenge could incorporate different weekly themes such as "car-free week", "veggie week", or "lights-out hour". The Team that makes the most progress could be awarded prizes such as energy-efficient appliances or carbon credits. This game-like and collaborative approach could help educate and motivate people to make sustainable choices while having fun, and promote friendly competition and community building.