Lee Jun-ki and ... his Present from Switzerland

It is here! What, you ask? The fruits of Lee Jun-ki's Swiss visit of course !!! Yes, I have been waiting for it ever since Joongi was here, in this very city. There are four items to get. A gift package (wow); two posters (more wow); an L-holder (which is what exactly?!); and a Post-It (uhm .... also not sure what that is. I mean, I know what Post-Its are, but I'm guessing the Joongi post-its are not exactly the post-its I know)