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.
stipes stapes stopes stupes steppes steps stops setups situps steeps stoops stoups stowps stupas sidepiece
stipes teepees watapes stopes steppes retypes redips neotypes cotypes biotypes atopies dopes dupes tapes taupes tawpies dips tipis etapes stupes dipso stapes retapes potpies metopes biotopes tepees types toupees topes topees tipsy tips wattapes
stipe step steppe stop stope stupa stupe