Those little paper tabs attached to a string on which, at the other end, you'd have a teabag. Growing curious as to whether anyone still does this as a hobby, I checked on the internet and sure enough, someone has a video showing their collection. Arranged by color, it seems.

https://www.youtube.com/watch?v=QeYu6BGfGwY

If those folks ever held a Convention, dare I suggest it would be on a "Teasday" at Teaneck, NJ? With the Mad Hatter as the Guest Speaker. (A good alternate location would be Boston.)