One of the museums that I visited was the Corning Museum of Glass. I took over 500 photos of what I saw there, and I thought I would share one of the pictures of beadwork done with what looked to me to be 22/0 beads. This is beaded knitting from the 19th century:
The one I'm talking about is the second piece in from the left, and if you look at the top rim of the goblet you can see a thin line of blue beads. Compare the size of these with the ones used in the piece in the middle with the deer on it. The centerpiece is made with 11/0 beads.
What an incredible piece this goblet is! I have no idea how they got a needle through those beads. They must have used a thread with the end glued into a portion stiff enough to be used as a needle. The whole piece was beaded with those tiny beads, and it's tough to get that many colors to make a flower pattern. Just finding the beads to reproduce this today would be quite the trick.