Food Hack

If you have an avocado or other fruit that isn't ripe, you can speed up the ripening by placing a freckled banana next to it. 

When a banana is covered in Brown dots or freckles, it is fully ripened and is giving off ethylene gas, this causes other fruits close by to ripen quickly. 

You could leave the freckled banana next to the fruit for a day then eat the fully ripened banana and then eat the other ripened fruit the following morning.