Take 4 canvases of each size), paint them a solid base color and add vinyl or stenciled design. stick decals onto canvases, paint the whole thing and then remove the stickers to reveal the wonderful artwork!
I would recommend doing it outside as it stinks and the rust from the steel wool will stain concrete so do it in a shop or over the road. DIY Vintage Wood Stain look. (How to age new wood). Good for all things wood!
DIY: Using IKEA Shelf Unit as Storage Bench Better Homes & Gardens . when changing table goes out, this can go in. still use baskets if needed. Ikea Lack shelf unit w/ legs is good for over the heater vent.