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.
coati coat cot cat cootie cattie coatee caid cote coda coot cadi cate goat cutie catty cotta codeia coteau goatee caddie cottae cad cut couteau cod gat kat qat got gout qadi gadi code coed goad cade kata gait kadi koto cute qaid gate
coati oat boat bootie footie coat cootie goat lati loti moat roti sati stoai doat shoat