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.
chuppas chuppahs chappies chaps chippies chips chops cheeps cheaps chapes cheapos shoppes chapeaus cheapies ships shops shapes
chuppas cuppas upas huppahs kappas koppas nappas papas poppas pupas chuppahs pas ups
chuppa chuppah chappie chippie chippy choppy