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.
offs oafs ofays office oaves ouphs
baffs biffs daffs riffs puffs muffs offs boffs buffs effs luffs feoffs howffs tuffs tiffs whiffs duffs chuffs diffs huffs jiffs gaffs ruffs raffs pouffs miffs naffs quaffs guffs quiffs caffs cuffs coffs toffs teffs waffs doffs chaffs dieoffs yaffs