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.
blabby blebby blab bilby blowby bellboy bleb blob blub bulb bullyboy bilbo balboa bilboa
blabby flabby lobby blebby clubby globby lullaby slobby wallaby
belay babul labile labially labial labella label bauble babool blae babel babble bylaw bola blaw blah liable