Try to avoid dried fruits like cranberries, raisins, etc. as they often have added sugar and the process of removing the water from the fruit leaves you with a concentrated sugar filled snack.  The whole fruit is much better as it has its water content in tact.  The water helps you feel full and dilutes the sugars in the fruit.
Your body treats the sugars in these dried foods the same way it treats sugar in candy or other "bad" foods- they cause blood sugar spikes and weight gain.

Another tip....Freezing fruit like grapes is a great way to save fruit that may be going bad and they taste great!