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.
nucha nuchae nautch nacho natch niche notch nitchie nosh
nucha hutch nautch mouch mucho lochia gotcha louche gauche cutch datcha gaucho such duchy ruche teuch pouchy touche pacha sheuch nuchae chai heuch chia ouch couch much mutch chaw chay mocha butch vouch chao douche dacha dutch sauch touch rouche touchy pouch yuch