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.
keek keck keg cake coke cuke kaka kaki kick kike kook cakey kaiak kicky kooky quake
eek geek keek leek meek peek reek seek week cheek