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.
eddy eddo ed edh eide
baddy biddy widdy toddy duddy soddy buddy eddy faddy fuddy giddy caddy cuddy kiddy middy muddy neddy noddy paddy ruddy daddy teddy waddy shoddy