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.
buns bunns bunas bins bans bens bunnies banes boons benes banns bonus bones beans bines bennes bonsai bonnes bouncy bennis bounce beanos beanies bennies boonies bonze
buns fauns funs huns guns muns nouns nuns puns runs suns duns tuns uns shuns