What's better than having one of something that you really like?! Well, how about having multiples of the same or similar item!?! So much design impact can be achieved when you arrange like items in a grouping, particularly wall arrangements.
Designing in multiples tends to provide greater visual interest, impact, depth, and dimension in a space since repetition is a key element in design. However, always keep scale and balance in mind to achieve the desired results. Asymmetrical arrangements and groupings in odd numbers (like 3's and 5's) typically look clutter-free and effortlessly pulled together!