Vent to vent

Adam keeps going to vent to vent in our house. He loves to opean them then close them. Well yesterday my mom went to swich the laundry and he opeand the vent and he figured out that he could see her. Theres a tiny crack in between the vent and the floor. Later when I took out some clothes from the dryer I looked at the cealing and i could see some little hands coming from the grey tube where the kitchen vent is. It was funny but a little scary. I showed my dad and he laughed. We also could see eyes.