Well you could leave him hanging upside down for ages so it feels like his eyes are gonna pop out or something. I'm guessing he can't really walk now so you could taunt him by leaving the door open but he can't get to it. Make him eat shit? (ew). If you want to be really cruel you could cut out his tounge so he can't sing anymore (that would be realllyy sad though). You could blind him? Also I read a book where a serial killer glued his victims eyes and mouths shut, you could just do that do if/when he's found he would be able to talk and see again whereas cutting out his tounge would bd forever. And making a tumblr for this is actually quite a good idea cause there might be some people reading this who don't have accounts and they want to make suggestions but they can't comment. I'm also curious as to what number 24 was going to be, what could possibly be so bad that you won't do after everything you've done already?? I have no idea lol. Anyway I hope you do some of my suggestions, keep writing you're one of my favourite authors on here. :)