Hay Bale Stand-Ups. Make your Western, farm or autumn scene complete with these simple to set-up Hay Bale Stand-Ups. With 3 different bales included in each set, these cardboard stand-ups will give your classroom Wild West event or fall festival the rustic feel you're looking for. (3 pcs per set) 30" x 16" - 19" Simple assembly required. Stand-ups are one-sided with a brown cardboard back.