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.
allay ally alley alloy ala all alae allow allee al aal ail ale awl alee aloe alow
cullay allay lay hilloa gully valley mulla foully galley fella pallia play billy wally chally olla willy dilly fellah tally scilla nelly zillah hallah mulley relay mollah cholla challa welly walla dually delay slay cellae rally felly filly flay holla quillai golly bulla lily holly illy jelly calla colly villae bullae volley fully pally jolly folly pulley belay hilly halloa alloy knolly alley ally cully flawy bally clay lolly gilly holloa hulloa really coolly belly mullah nullah kelly bully leally sally paella sully gulley delly dally villa dolly molly telly silly wallah gally waylay wholly cella woolly challah dully chilly shelly