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.
paean pean paeon pan pen peen pian peon pein pawn pain pane piano peony penni penne penny panne pawnee pennae pinnae pun pin hyponea pony puna poon pina pone pion piny pine puny
paean bean hyaena dean beano aeon faena haen jean gaen quean lauan lean mean meany naan paeon pean wean yean