Bean in the Ear

I know that children put things in places they shouldn't, but I wasn't expecting at 2 that I would find a bean in her ear. Paul picked Izzy up at school and they came over to my school to pick me up and when she was giving me a kiss from her car seat, Paul spotted something in her ear. We checked and after some prying, we got a dried garbanzo bean out of her ear. Fun huh? Thank God, the bean was large and only sitting, lodged in the ear canal and not "in" the ear. How do you teach a 24 month old that you can't put things in your ears, noses, etc., etc.?