Used cardboard crafts

If you have a used cardboard at home, do not rush the waste or on sale, because these boxes can be used to be a craft. The crafts you make can be used alone or even you sell. Because many handicrafts from cardboard are sold in craft stores and the results are very good.
For those of you who are interested to make crafts from used cardboard, here are some handcrafted drawings from cardboard that will inspire you.
thank you
may be useful