Bananas have a tendency to ripen way too fast and if you have too many this can be a problem. To avoid throwing out over ripe bananas and slow down their ripening, simply wrap glad wrap around the stem of the fruit.
This handy little trick works on a whole bunch or just a single banana. Alternatively there is the age old classic of putting bananas in the fridge. Simply by keeping them cold the fruit can last up to two weeks.