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.
spiny spinny spin spinney spine spoony supine span spooney spun spawn spean spoon cioppino
spiny piny pin supine spine pine spinny spin rappini pepino repine opine lupin pain pein rapine chopin pian pina piney lupine tiepin pinny repin rapini pippin papain lipin cioppino lapin jeepney apian puny pony pion chopine