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.
cubebs cabobs kababs kabobs kebabs kebobs
cubebs babes nabobess kebabs kababs cabobs baubees bawbees beebees bibbs bibs bobbies bobs boobies bubbas bubbies buboes bubs baobabs hubbubs babies kabobs kebobs nabobs