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.
skid skied skiddy skidoo skit skiddoo squid skeed skite soaked sacked socked sicked sucked scad scud skat scudi scudo skate skeet squad