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.
rushee rush ruche rushy rouche reshoe rash resh rishi roshi rechew reecho reechy reshow rotche
rushee she shea shew shoe bouchee fitchee vouchee cashew lichee lychee mashie reshoe toeshoe tushie