I have had three colds that my lovely children keep recycling. My advice depends on what kind of cold it is...
If you're stuffed up, turning the hot water on in the shower and letting the steam roll in can be helpful, it can also be helpful for a chest cough. You can buy plain saline solution as well to help clear things out.
If it is a dry persistent cough, drinking ice water, taking safe cough drops like Halls, can all be helpful. The key is not to let your throat get too dry.
Save the occasional tylenol for when the head pressure or throat soreness is too much, and consider buying some popsicles that have pedialyte in them.