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.
leukon liken logan logon lacuna lagoon laguna leggin logania
leukon kaon koan quoin beckon eikon ikon reckon rockoon daikon weakon
lek leak leaky leek leke leku luck luckie lucky fluke flukey fluky