After every box we pack we have to make sure that no cat somehow jumped in and tried to hide. Cats like boxes. Albert is smaller and a bit hard to notice. Here, we documented how at one occasion Jossan helped us find him and, also, tried to pull him out of the box he managed to break into!
And then I took Albert out of the box which we closed again and put under another box that he cannot break into (or so we believe…).