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.
cheapo cheap chap cheapie chape cheep chapeau chappie chip chop shape sheep chippy choppy chuppa chippie chuppah
cheapo apo heap heapy capo leap neap pepo reap repo sepoy teapoy tepoy cheap
chai chao chaw chay chew chewy chia chiao shea ache eche