I purchased a 12 piece of 1x2 steaks for $3.50
I only needed 5 pieces per shelf and I made two shelves :)
I also had a piece of scrap wood that was 1x4ft and had it cut in half for both shelves 2ft long for the back piece p
I screwed/hammered in each shelf as shown in the picture
Once finished with the shelves you are free to decorate as you wish!! Here is a picture of the shelf before I start painting.