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.
nuclei knuckle nickle knuckly nicol nickel niggle
nuclei clue rackle oculi nickle macule muckle cole aculei boucle mackle buckle fickle deckle socle tickle scale chuckle cicale clew heckle keckle pickle hackle knuckle macle mickle locule locale loculi huckle cockle cackle suckle sickle tackle cycle chicle ruckle shackle