I decided to visit the local Vinnie's (a second hand clothing store in Australia) to find a scarf or piece of material that I could put inside the frame. I snapped up an old pink and blue silk scarf for $2. The material was wrapped around the board and secured with old cork board pins that I had laying around not being used.
This project could easily be put together with any type of frame. Many second hand stores, like Vinnie's, have old picture frames with matting that could be upcycled in a similar way to add affordable artwork to brighten the home. A fun rainy day project.