B.C.
Yes, you can freeze cookies. If you cook and do chocolate chip cookies, freeze them on a paper plate until they are frozen, then put them in a ziplock type baggie. If you freeze them when they are stacked, you have a hard time separating them.
BTW, grapes are wonderful summer snack when they are frozen off the stem. Wash/rinse them. Place them on a plate or pan, freeze them and then place them in a ziplock type baggie. Eat them right out of the freezer. If you put them directly in a baggie, they tend to stick together.
Good luck to you and yours.