DIY glow in the dark stepping stones. 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 tried this last year: it works! How to make an inexpensive non-toxic homemade weed killer to control weeds in your garden: 1 gallon of white vinegar cup salt Liquid dish soap (any brand) Empty spray bottle