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.
caribous carbos carboys caribes carbs cribs carabaos carobs garbs crabs curbs corbies grabs grubs kerbs grebes krubis
caribous ribose rubious airbus marabous ytterbous
caribe caribou carb crib carabao carbo carboy carob scribe