I created little tea bags of loose tea with tea that I had purchased from David's Tea, using this idea that I got from the blog Lia Griffith. Luckily, my mom had some cheese cloth that she let me use, and I used some shipping tags as the lables -- I put the ingredients of the tea on the back of the tag.
Be aware that the tea you choose may want to poke it's way out of the cheese cloth. I chose the one with thin tea leaves, so I had to push them back inside sometimes. You might also find it beneficial to have a double layer of the cheese cloth -- I just didn't have much to work with.