A tent often needs to dry out, mesh sack good for this rather than original stuff sack or dry bag.

Almost all sleeping bags would benefit from a compressions sack, since all but the lightest 3 season down bags are quite bulky by design.

Electronics, clothing, maps and food should be protected from water. Lightweight sil-nylon bags work, so do the newfangled zipper-style freezer bags.

You may also need a sack suitable for hanging food up in a tree, out of reach of nocturnal varmints.