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.
idle idly idol idyl ideal idyll ideally
addle beadle reddle puddle piddle noodle padle boodle buddle fiddle needle fuddle heddle doodle dawdle waddle sidle widdle ruddle huddle idle ladle raddle poodle peddle noddle paddle middle meddle muddle caudle cuddle coddle diddle daddle toddle saddle wheedle riddle yodle