I cant upload FreeCad files on this site so please go to Thingiverse for FreeCAD: http://www.thingiverse.com/thing:1188195
Holder for beer. Attaches to desk via simple friction fit. Even has a little hook on the side to hang your bottle opener. Of course this will also fit your standard pop bottle if you wish to drink non alcoholic beverages. This can be mounted anywhere. Picture shows it friction fit to the TV stand in my house but this also fits on my desk and my housemates desk quite easily.