Creating a mini causal dynamical triangulation (CDT) display in an outdoor plant box is a unique way to blend science and nature. CDT is a theoretical approach to quantum gravity, and visualizing it can be both educational and aesthetically pleasing. Here’s how you can make your own:

1. Choose the Right Plant Box: Select a sturdy, weather-resistant plant box with enough depth to accommodate your display. Terra cotta or wooden boxes work well.

2. Plan the Triangulation Layout: Sketch a simple triangulation pattern inspired by CDT models. Use small sticks, wires, or even colored strings to represent the triangulated spacetime structure.

3. Add Plants for Contrast: Incorporate low-maintenance plants like succulents or moss around the triangulation to create a natural contrast. This enhances the visual appeal while keeping the focus on the display.

4. Secure the Structure: Use waterproof glue or small stakes to fix the triangulation elements in place. Ensure they’re stable enough to withstand outdoor conditions.

5. Label for Educational Value: Add small, weatherproof labels explaining the basics of CDT for curious onlookers. This turns your display into a conversation starter.

By following these steps, you’ll have a captivating mini CDT display that combines science, art, and gardening in one creative project.