Bananas
At this point, it should not be necessary to repeat it because it is well known, but if there is anyone clueless, here we go: bananas never go to the fridge because they will turn black right away.
In any case, a trick to delay this process is to put them in an airtight plastic bag with half a lemon. But better if we leave them out to delay their maturation, there is no need to expect miracles.