REMINDER:
One of the most useful things that I use to keep clicks down when I'm vocally smacky in the booth is to bite into a green apple (Granny Smith not Golden Delicious). I think the pH balance in the apple does something to the saliva to keep your mouth moist without being wet sounding.
So remember A GREEN APPLE A DAY, KEEPS THE SMACK AWAY!
Sure, who doesn't like a stimulus and pick-me-up delivered in a tasty beverage like coffee, tea or a soft drink. But when you're getting ready for a VO session, that caffeine can have the unwanted side effect of drying out your vocal chords. So be aware of the effects before hitting the booth. An herbal tea can be a wonderful substitute and still maintain the lubrication necessary to keep your vocal chords moist and healthy.