Add a little glow-in-the-dark paint, for example, and you might create a glowing guided walkway.
Yumi Sakugawa always comes through with some interesting ideas.
Glow-in-the-dark rocks could be very useful planted alongside a dark driveway or walkway, especially with Halloween coming up.
Check the link below to see what other cool ideas Yumi has for using rocks.
8 Cool Things you could Do With Rocks| WonderHowTo
