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.
buna bun bunn bunny ben ban bin biennia bene bone bean been boon bine bani bane bony beano benne benni benny boney bonne bonny
buna fauna kuna luna puna sauna tuna na un