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.
haika haik haiku hawk hick hike haku hake hack hooka hoick hawkie hawkey hookah hickey hackie hackee hickie hag hic heck hock hoke hook howk huck huic
haika haik haiku guaiac kaiak paik pika saiga sika zaikai taiga taka tikka