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.
sene seine scene sen sine sewn syne seen sane sone sinew scena senna sawney sienna sinewy sin sun son syn snaw zine sinh sawn cine sown sain sign snow sunn soon zein zone hyson sauna scion snowy sonny sunna sunny xenia
bene gene hygiene nene scene sene dene diene ne en