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.
holey holy hole haole hoyle holly hooly hoolie howl hale hilly holla hollo hollow holloa holloo hail halo hili heel heal helo haul heil hell hila hall hill hula hull
holey mooley foley ley ole gluey coly hooly fley colly coaly bole bailey flooey golly coolie jole jolly blooey bluey coyly joule haole gley mulley shaley woolly cooly wholly tole coolly alley folly noily riley oleo mole poly role solei dole galley moly hole looey vole hoolie doyly pulley volley jowly muley lowly molly hoyle voile holy cole gulley boule dooly doolee sole holly knolly oily olea pole valley lolly doily roily dolly doolie doyley toile whole woolie wooly shoaly