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.
bouillon billon bullion billion ballon balloon boloney ballonne belon blown bowline baloney blin blain blawn blini baleen blenny byline
billon bouillon zillion pillion mullion million galloon gallon cullion galleon jillion hellion bullion billion balloon ballon shalloon
boil boule boulle aboil aboulia