Do you know the Uten.Silo designed by Dorothee Becker? You don't need to pay it - do it yourself! All you'll need is a MDF (12 mm) as the base, some old boxes and plastic bottles. Cut everything at the size and form you want - leave some glue laps to fix them later with glue and some small pins. Paint everything with white acrylic, let it dry. Finally spray it in the color you love. Ready!