Elven Prayer for the Dead is a favored gift in Dragon Age: Origins - Awakening. It gives +10 approval (with diminishing returns) to Justice, and +5 approval (with diminishing returns), for any other companion.
Wending Wood - Destroyed Dalish Camp
See also EditGifts
Gifts can be sold to a merchant or given to certain party members to influence their approval rating.
Codex entry: Falon'Din: Friend of the Dead, the Guide