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.
beaky beak back bake beck baggy bag beg bike bock book buck
leaky beaky peaky shaky whacky wacky tacky wreak reeky gawky peak pawky oaky leak laky quacky quaky pecky beak rekey caky decay cakey teak jacky weak geeky cheeky fakey yeuky