How about ecigs and coffee?
Any all-day laptop users (from home) with coffee and cigs (soon to be ecigs) going all day long?
I don't like beer, lol, so that won't do.
Water isn't much fun either.
As for dry mouth, Sjogren's is an auto-immune condition that dries you out all over anyway, inside and out. There's a company that makes "saliva substitute lozenges" especially for this condition, called SALIX.
But you don't have to have Sjogren's to benefit from the products.
They are not large like a lozenge, but small and have a tart citrus taste that makes your mouth water.
Might help! Glad I have some on hand already... will probably need them more often when the SD arrives...
Found a link... evidently they changed the name to SALIVA-SURE: [this totally irks -- I had to remove the link to the product...grrrr]
Here's another place to get the lozenges, less expensive, in Missouri: [you'll have to find it yourself... had to delete this one too. Crazy rule if I ever heard of one... can't even be helpful

]
Those are more "natural" but there are regular Walgreen/Walmart-type "saliva stimulant" products from sprays to RX's. Not that you want to go that far, but it's an alternative idea for dealing with the dry-mouth from vaping. For more ideas, just google Sjogren's saliva products, reviews, forums, etc. That's where you'll find people who know everything about dry mouth/throat.