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.
baffies biffies baffs bouffes biffs boffs buffs bevies boffos buffos beefs beeves biface
baffies jiffies biffies waffies toffies taffies coiffes gaffes roofies raffias bouffes feoffees fiefs fifes fives suffice piaffes coffees pouffes reifies ruffes defies taffias maffias deifies toffees office fes