First, I sewed around the outside of the teabag and left the top open to fill with rice. My three year old was baffled as to why I would be putting rice in a tea bag. "Mama, why you put rice in there? I had to explain to her that I was pretending the rice was loose tea. She is still trying to wrap her brain around the idea.
After filling the bag half way with rice, I added a short piece of white ribbon and sewed the bag shut. In my stash, I found a few patterned felts that were quite fitting for the tea bag "labels". Gotta love that houndstooth.