Create 10 practical methods for sustainable food storage that completely avoid plastic packaging. Each method should be easy to implement and help keep food fresh longer to prevent waste and make the household more environmentally friendly.

Context: [food storage, food, sustainability, plastic-free, environmental protection, household, freshness, storage, kitchen organization, zero waste]

Goal: [plastic-free storage, longer shelf life, environmental awareness, easy implementation, cost savings, reduction of food waste]

For each method explain:
1) the concrete procedure and required materials
2) tips for optimal everyday use
3) the expected effect on shelf life and the environment

The methods should:
- cover various food groups (e.g. fruit, vegetables, dry goods, fresh products)
- rely on natural and reusable materials
- be suitable for beginners in sustainable households
- offer practical alternatives to conventional plastic packaging