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.
cheeky cheek check choky chegoe cheque chokey chucky chickee choke sheik chock chuck chook chick shaky chigoe chukka sheikh
geeky cheeky reeky eek leaky meek cheek beaky geek keek peek leek peaky reek rekey seek week pecky yeuky