There are 5 requirements for earning the Brownie "Household Elf" badge:
1. Save energy.
2. Save water.
3. Go natural.
4. Reuse or recycle.
5. Clean the air.
Maya completed this badge as part of a GSEP program entitled "Energy Elves".
From the program description:
Every Brownie can be an Energy Elf! Learn how to make your own air fresheners and household cleaners. Bring a T-shirt to create a reusable bag and cap off the fun with a scavenger hunt.