Simply grab two towels and wrap them around the barbell where you'd normally place your hands.
This is also a great variation for people with shoulder issues. The towel allows for a neutral grip, which is a very easy position for the shoulders.
It also forces the lifter to grip with more force, thereby activating more stabilizer muscles in the shoulder girdle. Lastly, it will force the lifter to use a lighter weight, which again will be a little easier on the shoulder joint.
Like everyone else, I've had my role models and mentors who've looked out for me. My mother has taught high school English for over 20 years, so I owe a lot of my writing success to her. My father taught me to tie a tie and to remember to check the oil in my car. My brother, the accountant, is always a phone call away if I need financial advice.