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.
dunk dink dung dank dinky dinkey donkey tank tung ding dong dang dingo doing donga tanka tunic
bunk funk hunk junk gunk lunk punk sunk dunk chunk