GENIUS…Line a pathway with rocks painted in glow in the dark paint. During the day they “charge” in the sun and in the evening they reflect the stored light. Rust-Oleum Glow in the Dark Brush-on Paint.
I save all of my eggshells & coffee grounds & sprinkle them around my hydrangeas & roses. The calcium is good for the roses & the coffee grounds make the soil more acidic for the hydrangeas. Organic Gardening - How to Deter Slugs and Snails With Eggshells