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.
drakes darkeys darkies darks dirks dorks drags dregs dreks drouks tracks trokes troaks trikes traiks drecks turkeys drogues druggies derricks drugs treks turks tricks darics trocks trucks triacs tragus taroks durocs terraqueous torques tricksy troikas turacos turkois teargas touracos turacous
rakes berakes drakes crakes brakes darks darkeys perukes burkes larks arracks freaks creaks carracks araks sarks reracks reggaes porkies narks rookies breaks barracks wracks birkies tracks trikes trokes warks sharks carks arks jerkies racks hayracks rakus marks rakis rykes croaks wreaks caracks parks eurokies karaokes cracks barks phreaks darkies brookies rakees rickeys rekeys quarks harks traiks troaks turkeys charks shrikes
drake dark darkey darkie darky dirk dork dorky drag draggy drek