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.
nubia nub nubby knubby newbie nab neb nib nob knob nabe
nubia bubba phobia juba cobia labia obia suba subah tibia tibiae tuba tubae