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.
piaffe pouffe pave puff pouff puffy peavey pouffy
piaffe gaffe aff coffee chaffy pouffe chafe naff waff quaff taffy gaff daff coiffe ruffe cafe caff fife feoffee bouffe baffy baff raff safe daffy toffee waffie chaff yaff