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.
snitch snatch snatchy synch cinch snash sennachie sneesh snowshoe
snitch natch nautch niche notch finch inch painch pinch cinch snatch snatchy winch chinch