Find Picture Frames and Display Boxes at Target.com! High-quality Mdf Plastic picture covers 3 square Sturdy construction Set of 6 The Oh Joy! 6-Piece Photo Block Set brings a bright pop of fun to your nursery decor with vibrant colors and chic patterns. The frames work well in big kids' rooms, too. Size: 3X3. Color: Multi-Colored. Age Group: Adult.