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.
hooly holy holly holey hoolie howl hole hollo hoyle haole hilly holla hollow hulloo holloo holloa halloo hull hale hila haul hell hail hall heel heal hili hill helo halo heil hula
hooly wooly cooly dooly tool noily foley jolly dolly roily poly molly lolly shoaly mool mooley cool coly colly doyly wholly woolly coyly holly coaly holey moly knolly folly holy fool doily pool moola flooey jowly wool golly lowly looey coolly blooey oily shool