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.
challa challah chalah chally cholla challie chela shall chill chola chilli chaleh chilly chelae shallow shoal chiel shell sheal shawl shaul shill shale shaly cholo chili chile chyle shaley sheila shelly shoaly
calla walla challa ala all cullay galah gall koala hallah ally quillai fall ball bally bulla leally halloa chalah wallah rally scilla palea cholla hulloa mall mulla nala olla tala alae pallia really cellae sally zillah dually challah mollah tall paella coala hall maill lall bullae pally mullah qualia tally pall cella realia dally nullah sall villae wall galea villa gala holla phalli fellah call holloa hilloa hallo fella wally gally allay chally shall
chai chao chaw chay chia chiao