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.
howdahs houdahs hods howdies hoods hoodies hoodoos heydays hots hats haets heads hides heeds hades heats hates hoots hiatus heights heydeys hideous hotties
howdahs dahs houdahs keddahs odahs whidahs whydahs chuddahs
howdah houdah howdie howdy hod