Objective: How to Ripen Peaches

Which of the following solutions is more sound in terms of naive physics reasoning?

Choose your answer from:
* Get a paper bag. Add your fruit to the bag. Let the peaches ripen. Check the peaches.
* Get a large duffle bag Add your fruit to the bag. Let the peaches ripen. Check the peaches.
Get a paper bag. Add your fruit to the bag. Let the peaches ripen. Check the peaches.