Jarod Johansen's Ball Stretching Guide
Various other devices are available for ball stretching, either as serious stretching implements or as erotic enhancements. They generally have the same requirements and restrictions as other forms.
The picture above shows a 'Ball Tamer' which is a very heavy 2.5 lbs. Great fun and hugely erotic, and also good for very quickly maximising whatever stretch the wearer has. Of course at 2.5 lbs and being bulky, it is not an all day proposition, so is limited to home indoor use for peroids of hours not days............unless you know different!
Bull's balls are a leather sac filled with lead shot and the same applies with regards wearability to the above.