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.
doodle toddle daddle tootle dottle diddle dawdle diddley dowdily dotal dedal daedal deadly diddly dottel tiddly dottily
boodle noodle yodle poodle doodle wheedle godly etoile rootle citole raddle riddle medley goodly buddle beadle caudle fuddle huddle stole edile odyl yodel daddle fiddle meddle peddle paddle middle tootle nodal model muddle cuddle diddle nodule aedile noddle waddle dale ladle doolie dole doolee needle piddle addle toile coddle heddle idle dele footle tole widdle sedile module modal audile odyle padle puddle reddle ridley ruddle saddle sidle stoolie dawdle diddley toddle
doodoo doody doodad diode dodo dowdy voodooed hooded hoodooed wooded