Jesper and Wylan decide to completely redo the Van Eck mansion, for bad memory reasons, so months are spent decorating each room with whatever the heck they want. There is a room of pretty guns and an everything music ever™ room and a gaudy room full of the most ridiculous fabric and wallpaper they both could find. There’s a room where the entire thing is just meant to be painted on, and a room that’s just a ball pit, and a room that's only beanbag chairs, pillows, and giant stuffed animals. There’s a room full of stuff for Jesper to change the color and composition of so nearly every day it looks different. There’s a room of books with a huge comfy chair where they both curl up while Jesper reads stories (and acts them out sometimes too). After a while they even redo the outside so it in no way resembles the house owned by Jan Van Eck, it is Wylan and Jesper through and through.