First, cut off the top of the pizza box and paint the bottom portion green.
Now, paint the bottom of the bowl grey to be a rock for the lion to rest on.
Break apart the plastic eggs and paint them grey.
Now cut some rectangles out of the green construction paper to turn into grass. Fold the rectangles in half and cut into one half of the rectangles.
Now, Glue the different decorations into your green pizza box to finish the lion habitat!