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.
touchy touch touche techy tushy teuch duchy douche tetchy tach tush tosh tech ditch dutch tache teach datcha techie tushie toeshoe
pouchy duchy touchy reechy nautch beachy beechy cushy botchy bushy bitchy gauche butch fitchy ruche mushy ouch sauch much douche dutch tetchy touch louche cutch gaucho witchy yechy poachy mutch gushy pouch tushy rouche peachy vichy couch heuch vouch hutch patchy pitchy nucha catchy pushy sheuch itchy mucho rushy mouch such leachy chay achy techy teuch touche yuch