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.
loony looney loon loonie lone loin luny loan lown liny lion leone lawny liney lin leno lawn linn line lien lean lain lane luna lune lino
goony loony moony towny goon tony coon downy gooney soon coney poon mony peony loon honey cony boon phony bony bonny boney money moon phoney looney noon pony sonny zoon toney toon shoon
loo looey looie blooey blooie flooey flooie