Can you show me how? Like, if I'm in a stock debian-slim container, and have mknod, and I've started as root, how can I get from inside the container to the hos

Can you show me how? Like, if I'm in a stock debian-slim container, and have mknod, and I've started as root, how can I get from inside the container to the host? Could I create files/run program on the host? Portscan localhost? Do something crazy with the docker socket?