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.
okays okas oaks ocas okes okehs oquassa oxy
kays okays tokays kas quokkas skas rickeys pokeys koas jackass kaas kaes zaikais hawkeys keys cays decays takas gays quays wekas sukkahs keas rekeys pikas cookeys mickeys skuas hookas sikas hookahs dickeys tikkas hockeys hookeys hickeys okas lackeys kakas jockeys ukase chukkas