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.
on one ono own
boon jeon soon scion cion pion noon paeon eon muon fon phon hon ion won ton shoon don aeon coon moon son hyson poon peon neon on mon loon con lion kaon goon toon tauon chon zoon yon