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