Clean and jerks with fat gripz? no better way to punish your forearm
I personally like to use towels around the bar for every type of presses (especially during ramping up, as after that when I drop the towies, the regular bar just feels like toy..) and for pullups/rows. But I've given up using the on deadlifts and cleans, as they limited my strength way too much. Sure, if you can clean significant amount of weigth with fat gripz, then your grip probably would crush a rock easily.
edit: hmmm I also love towies around dumbell handles. Actually, db snatches and db benching with "fat dbs" are among the best things I recall doing.