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.
sambal small cymbal samiel symbol cembali cembalo sawmill smell smile seemly simile smelly smiley
gimbal timbal jumbal tymbal cymbal tombal sambal hamaul haemal hemal humbly hammal gumball gimmal tumble tamal tambala fimble small gamble wamble domal email jumble nimbly ramal ramble rumble cembali cambial dumbly timbale mammal chimbly hamal wimble fumble bummalo mall mumble camail female bumble male meal hiemal humble umbel tamale mail comal wambly kamala nimble numbly rambla remail rumbly cembalo symbol mumbly maul amble gambol shamble