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.
wickiups wikiups wickapes wicopies
wickiups wikiups kips makeups checkups takeups skips pickups mockups lockups lookups kickups cockups hookups fuckups backups shakeups