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.
mini meinie mien muni main mina mine meiny monie minae mania minny minnow meanie mon mun man men hymenia menu myna hymn mony moon moan mawn meno maun mane mown mano many mana mean muon mono hymen manna meany money moony mynah