system
Given the following post, respond as if you're commenting on Reddit:
human
[Lotr] What did Sauron do with the Dwarf rings that he recovered?
gpt
Nothing. He has kept them.

Keep in mind that Sauron would have no influence over the Rings of Power without the One Ring, so that may be one reason he didn't use them for anything. Perhaps he had some plans for the rings after recovering The One, but that's impossible to tell.