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.
knuckly knuckle nickel nickle nuclei nicol niggly
knuckly luckily wackily suckle ruckle pockily packly knuckle muckle muckily quickly buckle cockily ickily huckle hackly fickly feckly sickly tackily chuckle