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.
piano pian pin pan pein pina pean pion pawn pain pane piny pine pinna pinny piney panne paean paeon pawnee pennia pinnae pen pun hyponoia peen peon pone pony poon puna puny
piano anoa wino danio beano fano fino vino canoe guano kino quinoa liana liane lino llano mano pian dino chino