DIY - Glow in the dark pots with mums for fall/Halloween. Buy a flower pot that you really like and use Rustoleum's Glow-in-the-dark paint to paint the pot. During the day, the paint will absorb the sunlight and at night the pots will glow.
Great idea for hiding guns in the house if you don't have a gun safe. Or even other items you want to keep safe! It took me a little while to understand this. The shelf unit slides behind a mirror. I thought it was a passage to a hidden room.