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.
pizza piazza piazze pias paisa psi pis pas pass pice piss pacy pies paws pays pase piso peas pois pace
pizza baiza fizz fizzy huzza huzzah piazza dizzy tazza tizzy whizz whizzy