Beyond all the stuff you likely know, rest, pain reliever, nyquil, etc., I find that with a cold my life really goes to shit if my nose is running. It's god-damn miserable and keeps me from sleeping, and even lotioned tissues only delay the chafing (of my NOSE, you creeps!). A generic Claritin every 14-16 hours (I don't get a full 24 hours, but they do tend to work well) dries me out enough that I can ride it out.
Good luck, if thin drainage is troubling you, that might help even if you're not the mucus faucet that I turn into. Mostly it's just treat the most annoying symptoms and let your body heal.
Zinc just when it starts. These candies you let to dissolve in your mouth. One every two hours when the first symptoms start and if lucky, the next day the symptoms are gone.
In US they sell them with the brand name Cold-Eeze, and similar products are available in some EU countries but not in all of them.