Well, something being delicious is subjective, but if we assume a “general acceptance” of most delicious foods, potatoes could fit easily. They can be cooked in all kinds of ways, are very nutritious and, again, pretty much everyone says they’re delicious.

An OEM FM/AM transmitter. I would love to be able to playback music directly to any old ass car. Or even use it as a very short range walkie talkie with the right program.