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.
baboo baba bubo baby babu babe boob booby boubou bawbee boobie booboo baubee bib bob bub bibb bubu
baboo taboo boo abo boob booboo
baboo abo baba babe babu baby baubee bawbee bubo taboo