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.
conky conk konk conga congo conic gunky kinky congou cooing cooeeing gong gunk kink
conky wonky honky pinky inky hanky wonk dinky zonk zincky oink bonk hinky lanky kinky nooky boink chinky punky funky monk zinky snaky hunky honkey hunkey donkey dinkey punkey pinkey honk junky linky monkey konk gunky conk chunky
con coin cone coney coni conn cony coon icon cockney scone