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.
pastel pastil pastille pestle pistil pistol postal pistole pustule postally hypostyle
hostel pastel listel steel castle pestle eustele bustle lastly costal stele justle coastal beastly nestle istle pistol roseately wrastle distal whistle stela festal costly mostly postal rustle ghastly justly pistil pastil moistly facetely distil wrestle osteal jostle steal hustle hostly vestal vastly ghostly chastely
past paste pastie pasty pasta pst postie post pistou pesty paused pesto pest passed passado passade psst piste