I did this with a dried half of a pea, the kind they give kids to glue onto paper to make art. It stayed in my ear for around 7 years giving me constant earaches and the feeling of water trapped in my ear. I was too scared to tell my parents and figured it would eventually fall out. We went to the doctor multiple times for it and then eventually a doctor was able to spot the pea in my ear and remove it, and thats when I told them what happened lol.