A good little bicep shocker that has served me well over the past few months is a good start! Its called the "good little bicep shocker". The execution is vital when performing this exercise.
1) Raise the barbell with your left arm at the very end of one side and the right arm in the middle of the barbell. Lift slowly, as the arm positioning may seem awkward at first. Do 3 sets of 12 reps. Remember the most important factor of bicep workouts....breathe in when contemplating a rep!