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.
fohn foehn fon foin fin fun fan fen fawn phon fain fino fano faun fane fine faena fanny fauna fawny feign fenny finny funny phone phono phony