It is really hard to find a place for big unresealable packs like packs of milk, cereals, etc. We usually have this problem at home as we don't have enough containers. It is a problem because it can create huge mess.
One thing I learned from my husband - resealing these packs with clothespin. We don't have easy zip bags available, so this is one good way to keep things neatly sealed. Just make sure to fold it several times to hide the open area and put the clip on. If there's a clean plastic bag, place it in there to keep it clean.
Binder clips are a sturdy alternative to the colorful plastic clips used for keeping chip bags and other food packages closed. Try some; you may find that they are a better choice than the popular plastic options.
Clothes pins can be an inexpensive alternative to buying more expensive chip clips. This is a page about use clothespins as chip clips.