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.
banzai bonsai beanies bans banes banns beans bonze beanos bennis bonaci bennies boonies bunnies
banzai nazi bonaci bonsai lanais zanza unais
ban bane bani bean beanie beano