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.
spoke spake spike spook spikey spooky spec spik speak speck spick spiky spicae seppuku spic
poke cowpoke mopoke spoke peke pike pock pokey poky puke kapok spake spike spook yapock yapok