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.
punkey punky pinkey punkie punk pinky punka pinkie punkah panicky pink pung pinko
hunkey monkey dinkey pinkey honkey punkey donkey pinkie hinky honky lanky kinky zincky linky honkie punky hankie snakey gunky chinky conky wonky funky junky snake nuke dinky hanky zinky pinky minke snaky inky hunkie junkie punkie hunky chunky