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.
cracky crack croaky carack creaky carrack crickey crake creak corky crick cruck croak crock craggy crikey curacao curacoa croc cark crag cork creek crook quirky carioca karaoke
cracky braky track darky rerack narky croaky creaky crack carrack carack hayrack freaky bricky barrack rack barky arrack wrack rocky rickey crickey larky pricky sarky drecky tricky