Well, #5 makes me think of the WHITE GEM Arwen gives to Frodo; I don't think it's specified beyond that. And #10, on general principles, I have to guess as PEARL(s).
Er, and #9 evokes the flag of Rohan. I'm thinking shield? Merry receives a round shield bearing the device of the White Horse, though I can't come up with an actual answer out of that.
Double-er: #2 makes me think of Imrahil, whose emblem was the SILVER SWAN.
hS
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