Refillable Sandbags

If you go on any professional video set, you’ll see sandbags in use as a protective measure to secure light and audio stands. But traveling with 250 pounds of sandbags can get expensive (and heavy). Instead, try refillable sandbags, which travel light. When you get to your location you can fill them with sand, rocks or whatever else can be found nearby. A popular model is made by Lindcraft, and is made of durable Cordura Nylon with a heavy-duty zipper with a hook and loop cover flap to keep it shut.

You can check them out here