A Bulgarian training bag is a great exercise tool to increase muscular endurance and general fitness. Originally developed for Olympic Greco-Roman wrestlers, the bag has a wide range of exercises including anything you can do with a shoulder-loaded barbell. Commercial Bulgarian bags cost $250 and up, but you can make your own for around $20 with a large tire inner tube, zip ties, duct tape and wood pellets.
Traditional skills blog The Art of Manliness recommends Bulgarian bags for minimalist training as they are simple and effective, much like use of a kettlebell. To make a Bulgarian bag you'll need a large truck or tractor tire inner-tube you can find at an auto parts store. Cut the valve stem from the tire and seal one end off with zip ties and duct tape. Fill the other end with wood pellets and tie it off the same way. Now you have a Bulgarian training bag.
Now that you have your training bag, the video below has 40 different exercises featuring the bag:
If you need a low-cost way of keeping in shape, consider giving Bulgarian training bags a try.
Minimalist Training: How to Make and Use a Bulgarian Training Bag [The Art of Manliness]