Every time I come across one of these props, can't help but wonder,
Container containing cuboid items.
At first, it appeared to me as a box of chocolates or what not, but the texture of small cuboids is of metal.Texture is grey and with reflections. Also, the box is odd for something like candy, for it seems made entirely of metal too, which may be too expensive for only some chocolates, and due to most metal's tendency to rust could be not the healthiest choice of container material for edibles,
Also, there are none of these props I had seen without all of the cuboids present. So it's probably not something adequately consumable.