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.
gonia goonie goanna coni gown goon gone goony guinea gooney guanay gun con gan conn koan gain gane gaun cone cony coin gaen guan coon kana kaon kina kuna
gonia mania choana teniae taeniae donna zonae inia coni goonie loonie hymenia biennia nona monie hyponea hyponoia pennia xenia zinnia zona dona taenia tenia toonie yoni