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.
icons icones ikons ickiness igneous iguanas
cons deacons bacons neocons icons recons beacons racons macons daikons recoins beckons cans ikons coins agones cones coons quoins lagoons pecans eikones scones tigons tycoons bygones wagons leukons rockoons kaons reckons conus logons scans cocoons koans conns agons cogons eikons gowns goons racoons acnes doggones toucans waggons icones weakons