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.
coiffes coiffeuse coffees coffs coifs cuffs cuifs coves coofs cafes caffs cavies gaffes coveys quiffs kifs caves gaffs goofs guffs kaifs kiefs coughs cuvees quaffs guffaws
coiffes baffies wifes waffies toffees taffies deifies riffs pouffes knifes miffs quiffs gaffes coffees jiffs jiffies fifes feoffees bouffes biffs biffies piaffes reifies ruffes diffs tiffs toffies whiffs wifeys fes ifs