This expandable micro gravity lunchbox has four foldable boxes on all four sides. There are magnets at the edges of the four boxes to keep them attached to the central container when the boxes are closed.
These boxes can be used to store any solid items like food or any experiment equipment. Lunch box has a liquid container at the center. This has a screw lid with straw. Whenever the screw is turned down the pressure will bring the liquid out through the straw. I think this may be a good way to drink water in a low gravity environment because it releases water based on pressure not gravity. Water can be filled in the similar way by connecting this to a water pipe and turning the screw cap in the opposite direction. This expands in all x, y and z axes when assembled and used.