I found I could take apart the Glade solid air freshener and use it as a plant container. It comes apart pretty easy. I put a piece of no slip drawer-liner in the bottom of the little cup. This keeps the soil from coming out of the bottom when watered.
I chose to use the rose-shaped top, which I painted yellow, because it looks like a yellow rose, which is a favorite of my mom's. I think it turned out really cute, and I plan to do more in the future ;)