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.
booby boob bobby bob boobie booboo baby bubby baboo boubou bib bub baba babe babu bibb bubo bubu
booby looby bobby boob hobby cobby goby lobby knobby nobby obey poboy dobby doby toby
boob boobie booboo booby boo bob bobby boubou looby doobie