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.
cheap cheapo chap cheapie chape cheep chip chop chapeau chappie shape sheep chippy choppy chuppa chippie chuppah ship shop
heap cheap hap hep chap shape cheep cheapo chape whap wheep whaup reap neap leap heapy sheep
chai chao chaw chay chew chewy chia chiao shea ache eche