I try to every day because I know what seeing a random act does for my soul and I want to spread the bliss.
Even if it is just a smile at someone for no reason, I try and keep that in mind all day. Even if it is not flipping the bird at someone who is honking at me and just giving a friendly wave, makes me feel strong inside.
When I have a coupon for an item I'm not buying that day but notice the item in somebody's cart, I like to give them the coupon. It's fun just to see the surprised look on their face.
No big deal but I think the little things can help make the world a brighter place.