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.
toupees topees topes tepees taupes tups tops teepees topis dupes types toepiece dopes topos tapes tawpies taps dups tips tipis tepas tipsy tapis deeps topaz dopas tapas typos typps tepoys teapoys
rupees toupees pees epees veepees jupes coupes loupes peeps supes dupes taupes teepees tepees topees rappees whoopees pes ups
toupee tope taupe topee stope stoup stupe top tup