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.
chukkas chucks chuckies chugs chokes chocks chooks shucks chicks checks cheeks chicas cheques chickees chics shags shooks shikse shiksa chicos shakos sheiks shacks shakes shocks chegoes chigoes shackos shakoes sheikhs shicksa shikseh
chukkas kakas quokkas sukkahs tikkas ukase kas