: I doubt the Ring of Fire was particularly well suited to the
: hands of a shipwright. Which may, in part, explain why he
: passed it on.

He probably had the most inspired sailors on the seas. Other than that, Narya did carry out it primary function while with Cirdan -- to help slow or prevent the fading of the Elves.

: : Did Galadriel or Elrond do anything in particular with theirs
: : except keep their havens going?

: Nothing much more is explicit. Although keeping their havens
: going was no mean feat. The effect of holding back the fading
: of the Eldar meant that there were some still in Middle-earth
: to give advice and guidance during the War of the Ring. But,
: personally, I think Elrond had an especially important use for
: his Ring. Tolkien nowhere says it, but I am prepared to wager
: that the Children of Elrond were the only children born to the
: Eldar in Middle-earth after the death of Gil-galad.

Why? The Eldar didn't become impotent or anything. In fact, Mithrellas, being a Silvan Elf, might nonetheless have been an Elda as well (assuming she was descended of the Nandor). Hence, when she had children (albeit Half-elven children) by Imrazor the Numenoran, she would have been an Elda having children.

Legolas may have been born in the Third Age as well. He is not mentioned by Tolkien in the passages discussing Thranduil and his father Oropher.

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