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.
umiacs umiacks umiaks umiaqs
oomiacs umiacs chemics umiaks tombacs comics umiacks tombacks sumacs smacks oomiaks oomiacks mimics gimmicks tambacs macks amigas amicus mics micks micas macs iambics umiaqs chymics