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.
shoppes shops shapes chappies chippies chops ships showpiece chapes chuppas chapeaus cheapies chuppahs
shoppes opes yippies dopes rappees poppies popes pappies koppas hoopoes hopes copes copies chippies buppies chappies topes whoopies koppies coupes hippies whoopees topees ropes puppies poppas pipes nappies nappes mopes loupes lopes guppies yuppies pes ops