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.
choir chair chore chiru chiro chirr chorea chirre char shore shirr shier chare chary churr cheer charr shire shoer charro charry cheero cheery cherry churro cheerio shri
choir hair shoer shire chore chiru chiro whore hire hoar hoer hora hour coir gooier moira moire noir zooier doughier whir whirr chair chirr heir shier shirr shore
chi chai chao chia chiao chough chow achoo echo echoey chichi choush chowchow