I'm a poor photographer, and keeping my lights from falling over on a shoot is very important. But, I didn't want to spend $30 a sandbag to do what any good heavy object could do. I've seen people use ancient window weights, and all manner of other things to keep their stand from falling over, but in my opinion my brick weights are by far the easiest and cheapest solution. They also have the advantage of being much more water resistant than sandbags, if you happen to have the misfortune of having to shoot outdoors on a humid or, God forbid, rainy day.
Step 1: What You Need.
-about 3 and half feet of rope (I prefer the soft poly kind that can be melted)
-Duct tape (colorful if you have it, Gaff tape if you're really fancy)
Step 2: Ready Your Bricks
Step 3: Cut Holes for Rope
Step 4: Cut the Rope
After you've cut and melted the tips of the rope string it through one brick and then the other, and tie it under one of the bricks.
Once tied, go over the knot with the lighter briefly to melt the knot together so it will not come loose.