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.
pecky peck pocky peaky picky pec pack pock peak puck peek pick peke poky pucka pekoe pawky pokey peg pic pac peag pica pika pike piki poco poke paca paik puke
pecky gecko cocky keck jockey jacky caky rekey sucky rocky deck picky dickey reck peck ducky neck tacky mickey whacky quacky cheeky leaky yeuky coky beaky geck reeky feck heck kicky hockey icky hickey rickey decay wreck decoy pocky beck dicky geeky tackey peaky wacky mucky check lackey chucky lucky yucky