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.
spiked spoked specked spooked spicate spigot
piked paiked spiked packed peaked pecked peeked picked pocked poked puked repacked specked spoked spooked
spik spike spikey spiky sepic spake spic spica spicae spick spoke aspic