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.
packly pawkily pockily pickle pokily pical picul
fickly sickly hackly packly quickly feckly knuckly cloy weakly clay nickel deckel knuckle luckily buckle coly tickle fickle cheekily cockle meekly keckle pawkily quakily heckle huckle muckle tackily ickily shackle cackle chuckle leakily rackle wackily mickle nickle jackal cockily hackle pickle ruckle suckle tackle weekly chicly likely pockily hokily scaly pokily jokily sickle mackle deckle muckily gawkily shakily
pack pac paca paik pawky peak peaky peck pecky pick picky pock pocky puck pucka spake