Second and more risky method is to drop the items somewhere hidden, loggon on your alt and pick them up and said place. And beg that no one is treasure hunting in that area while you relog.
Not so risky, I even did it almost in presence of many people at NCR once, when was too bored to hide my 6 adv. gunpowders and a book for my suicidal bomber at inner city, just drop your item behind barrel/plants/in cabbage, etc. So it'll be impossible to spot that item even if they will stay at this hex, because it's not transparent, even if you come too close, so they had to tap "G" button all the time, everywhere, behind every plant and barrel to get your items. So, just be sure that noone is here and drop it behind any non-transparent object.
Does the key "G" works? never worked for me