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.
mousy mousey meous moues mussy mossy mosey mouse mus mos miaous mousse moas mows muss moos moss muse messy massy missy meows moose muzzy mosso missay miaows mis mas miss mews masa maes mozo mess miso mesa mass mazy mise mays maws
bousy mousy lousy goosy mosey cosy poesy nous nosey mussy mossy lossy meous mousey gussy moues pussy roues sous douse wussy choosy yous louis goosey causey mouse souse touse rosy rouse house cosey posy pious hussy chouse choosey nosy noisy bossy miaous louse bouse busy fussy hosey youse