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.
quaichs quaiches quiches quitches quashes gouaches caches coaches cuishes cutches gauchos cachous catches couches coshes gashes cashes gushes kashas cashaws cashews cashoos cooches cushaws gotchas ketches
laichs quaichs ichs tachs quaiches niches sauchs riches loaches rachis gouaches dachas wiches leaches liches naches laches miches quiches machos peaches caches coaches fichus nachas roaches reaches poaches pachas nachos aches lichis machs baches beaches fiches maches seiches taches teaches chichis