Bubby Pots (aka: feeding pots, sucking pots, suckling pots, nursing pots, feeding pots and/or milk pots)
Feeding pots generally have all the same characteristics. They are shaped like very small coffee pots, they have a unique "perforated" spout tip (which was covered with cloth or soft leather "teat" which served as the nipple), and they have a lid. As you can imagine, besides being extremely delicate, the spouts were impossible to clean completely and thus resulted in extremely high infant mortality. Many of those that exist today often look like they were never used (maybe the real reason they survived).
Sucking pots on the other hand have a small spout coming straight out of the side closer to the top. These I dare say are next to impossible to find in part because people do not know what they are when they do come across them.
Please look at the Photo Library as it contains a close-up inventory of wonderfully representative samples to enjoy and study.