Writing lines is a wildly under appreciated punishment. I had this old-school middle school teacher who probably would have spanked/paddled if he was allowed to, but as an alternative his detentions were 100% corner time and he would send you home with a fresh ream of paper to fill out - back and front - with whatever line he chose.

Standing in a corner for an hour or so, staring at nothing, not allowed to fidget, and thinking about how the rest of my evening would be even worse was one of the suckiest experiences I’ve ever had. I was pretty immature and defiant in those days but I quickly learned to behave for him.

Anyway, I say all this because I figure you might get some inspiration. Lol.