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.
shammes shammies shames shammas shammos shams shimmies chammies shamas shawms shamus shmoes shamos shamois shamoys siamese chams shims chimes chymes chamisa chamise chamiso chamois shmooze
shammes ammos heaumes immies hames mummies ramies pommies dames memes momes mammeys tommies mammas tames wames mameys whammies games shames kames jambes fames shammos femmes siamese commies gimmes gimmies mamies jemmies jammies jimmies mommies ramees names rummies mammies mimes mammees tammies dummies amies tummies lames wammus gambes chammies gammas shammas cames shammies cameos shimmies cammies yummies
shammy sham chammy shame shamoy shawm shimmy