A sandbag may look like one of the most boring pieces of equipment in the gym, but I say it’s among the most underrated. That goes double for a home gym: Most people drop cash on dumbbells or barbells when a sandbag will give you way more weight for your money—and a good deal of versatility.
Source: LifeHacker – The 10 Best Sandbag Exercises to Try at the Gym (or at Home)