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.
cackle cockle caecal keckle cockily caecally gaggle coagula coequal gawkily quakily quickly coquille guaiacol
buckle huckle ruckle hackle keckle mickle tackle knuckle sickle heckle cockle shackle suckle rackle mackle muckle nickle deckle cackle tickle pickle fickle chuckle sickly clue locule scale locale knuckly hackly kale meikle feckly fickly deckel packly quickly macule socle chicle cycle boucle nuclei macle jackal clew cole cicale nickel
caca cacao caeca cake cakey caky cock cocky cuckoo