Plastic boxes are great for storing things, but they can look very utilitarian and bland. One way to make them more interesting so they blend well with the decor is to add a collage to the container. You can use the same techniques of découpage for plastic as you would on wood furniture pieces. Starting with pictures from your own photography or magazine cutouts, create artwork on your plastic containers using découpage glue available at craft stores.
Sand the area you will be affixing the collage to on the plastic container. This will allow the découpage glue to bond with the surface of the plastic. If you don't sand the surface, the collage may lift up because of inadequate grip.
Cut out pictures and arrange them on the container's surface to determine how you want to lay them out for the final collage. Planning ahead in this way will help you avoid mistakes.
Paint the container with the découpage glue and place your first layer of pictures on. Cover this layer in another layer of découpage glue so that the pieces that overlap it will stick.
Finish the collage with two or three coats of découpage glue to seal the pictures. Let the final coats dry before using the storage container. They are dry when the glue no longer has a tacky feeling.