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.
poufs pouffs pouffes poofs puffs pooves piaffes
poufs boffs bughouse loafs hoofs howfs feoffs sofas doghouse dieoffs duffs roofs taphouse ruffs coifs tofus poofs tuffs oafs uveous loofs woofs muffs chufas buffs huffs coffs dufus goofs kufis cuffs coofs cuifs rufous doffs devious doofus puffs roughhouse baghouse pouffs toffs offs tufas niveous typhous loofas whoofs luffs chophouse guffs chuffs
pouf pouff pouffe pouffy poof poofy puff puffy