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.
raffias raffs raphias ruffs riffs ruffes raphis roofies reifies rifs refs reifs roofs rives reefs raves raphes reaves refuse reives revise rufous reavows reviews
raffias maffias taffias baffies biffies jiffies guffaws luffas mafias taffies tafias toffies waffies fas