I've taken a list of English words, and examined each of them to see what they sound like (using the PHP metaphone function). This page lists the most common metaphone codes, along with their words. You can also search for a word of your own, and see which words sound similar - and which ones rhyme, and which ones alliterate.
lagoon lagan logon laguna lagune ligan logan lacuna lacune leggin leukon lacunae logania
lagoon goon waggon tigon rockoon coon gone goony gown agon agone begone agony bygone cocoon cogon logon neocon racoon doggone tycoon wagon
lag laogai league logo logoi flag flaggy clag plague plaguey plaguy slag slaggy