Yes, building a solar still from household materials is fairly simple. Here's a basic guide:

Materials:
- A large plastic sheet
- A shallow bowl
- A clear plastic bottle or container
- Rocks
- Tape or adhesive
- A piece of cloth or towel

Instructions:
1. Place the shallow bowl in the center of the plastic sheet.
2. Place the clear plastic bottle or container upside down on top of the shallow bowl, so that it is centered.
3. Use rocks to weigh down the edges of the plastic sheet, so that they are secure and do not move.
4. Tape or use adhesive to seal the edges of the plastic sheet to the clear container, so that no water can escape.
5. Place a cloth or towel over the open end of the clear container, so that it covers the opening.
6. Place the entire structure in a sunny location and wait for the water to evaporate.
7. The evaporated water will condense on the sides of the clear container and drop into the shallow bowl, where it will be clean and safe to drink.
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