Designing outdoor furniture for efficient stacking requires a balance of functionality, durability, and aesthetics. Here are key strategies to achieve optimal stackability:

1. Modular Design: Create furniture with uniform shapes and interlocking features to maximize space efficiency. Chairs or tables with identical footprints stack neatly without wasted gaps.

2. Lightweight yet Durable Materials: Use materials like polypropylene, aluminum, or treated teak that are easy to lift but weather-resistant. Avoid bulky designs that complicate stacking.

3. Nested Components: Incorporate foldable or collapsible elements, such as stackable chairs with slotted legs or tables with removable tops, to reduce storage volume.

4. Sturdy Base Support: Ensure the bottom piece in a stack has reinforced edges or a wider base to prevent toppling and distribute weight evenly.

5. Minimalist Aesthetics: Streamlined designs with smooth surfaces not only look modern but also prevent snagging when stacked.

By prioritizing these principles, outdoor furniture can be both practical for small spaces and visually appealing for any patio or garden setting.