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.
blet bluet bleat bolete bullet billet ballet boleti bolt blot belt blat bled blate bloat built blade blite bleed blued baled ballot bolled bolide blotty blotto blight boiled bulled billed bowled belied bawled belled balled bailed balata ballute blighty ballade bullate bailout bellied bullied bald bold baldy bield blood build
let howlet willet toilet rillet pullet pellet palet mullet mallet gullet gallet cullet culet collet callet violet ballet valet fillet filet bullet blet billet quillet millet owlet pallet piolet relet sallet wallet chalet