There are several ways to create gratings that will not only become decor, but can also become a place of location of flowers, vazons.
You can hide the battery under a grate-matan. It is simple enough to make it yourself. The basis of the structure is a frame of wooden bars containing a section of 30×30 mm. You can connect them in any way convenient for you. Furniture cotton ribbons will be decorating the frame, the edges of which will be attached from the back with the help of stapler brackets. To attach the frame itself to the wall, from the back of it in the rack you need to cut the hinged loops. Such a simple design can significantly improve the interior of your housing.