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.
kebobs kabobs kebabs cabobs kababs cubebs
bobs kabobs kebobs cabobs nabobs baboos rubaboos boobs buboes kebabs bibbs bibs baobabs boubous booboos haboobs hubbubs cubebs kababs bubs bubbas rubbaboos