What is another word for "windfall"?

Roget's Thesaurus (1911) lists these synonyms for "windfall": advantage, all, aright, behalf, behoof, beneficial, benefit, best, blessing, boon, boot, chance, commendable, common, consummation, devoutly, far, favor, for, fortune, gain, gift, giving, godsend, good, goodness, happiness, harvest, improvement, interest, luck, magnum, main, not, piece, pleasure, prize, profit, prosperity, remedy.