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.
gooney goony goonie goon gone coney cony cone coon gane gown gonia gunny koine goanna guanay guinea con gan gun
phoney coney looney gooney money toney honey boney one zonae cony none bone bonne pone donne sinewy monie cone pony peony sone sonny zone downy tonne toonie waney winey phone shinney piney goony sawney bonny gone donee mony loonie leone loony hyponea hone done tone goonie moony liney lone phony bony tawney tony towny whiney sheeney koine shone