3 oz. Dixie Cups -- these are great for drinking, because they can be molded flat to make it easier to drink, and your life becomes all about managing small quantities
Surgical masks -- These are great for allowing you to walk around without holding a towel to your mouth all the time; I fold a portion of an old facecloth inside for absorbency.
Old face cloths and towels -- Tie a towel behind your neck, especially when you need both hands for an activity, like keyboarding. Their absorbency beats ANY paper product, even if it does mean more laundry.
Wolfgang Puck's Chicken Stock -- When you cannot look another can of Ensure in the eye, this, in conjunction with a good food processor, will turn ANYTHING into a delicious soup-like version you can then spoon into your mouth.
Food Processor -- My daughter and I had lunch together; she enjoyed a chicken pesto pannini sandwich while I "feasted" on a dollop of hummus. When she wasn't looking, I took the other half of her sandwich, put it in the food processor with some chicken broth, and -- Voila! -- Chicken Pesto Pannini Soup. Yeah, she thought is was disgusting, but desperation reigned supreme here!