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.
synch snitch snatch snatchy cinch snash sennachie sneesh snowshoe
lynch synch ranch raunchy cinch haunch finch eunuch bunch bunchy bench quench lunch painch paunchy poncho punchy dunch wench chinch rancho punch manche conchy pinch paunch munch launch kench honcho hunch concho concha conch cancha wrench raunch inch ancho tench winch chinchy