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.
cheek cheeky check chegoe cheque chickee sheik chick chock choky choke chook chuck chigoe chokey chucky chukka sheikh chic chug
cheek eek heck geek geeky keek leek meek peek reek reeky seek week check cheeky sheik