When someone is sick (or recovering), you send flowers. That's acceptable and nice. A perfectly good gesture. But think about it: what the hell is a sick person going to do with flowers?
"Stare at them from their sick bed and think of me fondly!," you hope, but mainly, they're going to put them somewhere and never look at them or think about them again. So why not get them something that will actually aid their recovery, like massive amounts of junk food?
The Get Well Soon Collection ($50, ECreamery) provides the convalescent with 4 pints of (fully customizable) ice cream that are delivered to their door overnight on dry ice. ECreamery also allows you to personalize ice creams for non-sick people (imagine ice cream emblazoned with "Mom's Anti-Aging Cream").
Hey, the only two times you can eat a bunch of crap and not feel bad about it is when you're sick or when you're pregnant. The recipient will be happy to indulge. Trust me.