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.
pec peck pecky pac peg pic pack peak poco pock pike paca peek peag pica pick peke poke puck puke peaky pekoe picky pique pocky pokey pucka piggie