When I was growing up my Mom didn't make the standard for our upset stomaches.... a can of warmed Campbell's Chicken Noodle soup and a handful of Saltines. Rather she would brown up some plain hamburger and mix it with a cup of plain cooked rice.
I can only imagine where she got this idea, but we ate a lot of that whenever we were sick. She'd occasionally substitute boiled chicken if we were out of hamburger, but it was served the same... with a cup of cooked plain rice. We never had this for a regular meal only when we were sick. Strange as it sounds I liked it and would eat it to settle my tummy.
Now that I'm on my own and have my own kids, I tend to make the version with boiled chicken with the rice stirred in for them.
I also refrigerate canned fruit until its icy cold and will eat that when I have a sore throat or the flu.