Some of the things I keep around include a box of N-95 masks and a box of those handy blue nitrile gloves from Harbor Freight. This
PDF publication written by a doctor discusses home care for those with the flu during a pandemic. Hydration, OTC anti-diarrheal meds, OTC anti-nausea meds, even little things like bendable straws. The stuff lasts a long time and doesn't cost much at all. Anyway, there's probably a very small chance of a flu pandemic, but it's one of those things that has happened before and for which a little cheap advanced preparation might go a long way.