Several years ago I went to a holiday gathering with a friend and their grandmother had made these 2 liter bottles for everyone... we were awed and amazed! I remembered all this time and finally made my own! I used diet coke because I heart the juxtaposition of it all. :)
Its easy just cut the label carefully at the seam, Peel back. Cut a large C shape under the label (about four inches wide) add tissue paper to the bottom. Stuff the large pieces first, then fill with the small stuff!
I stuffed these with a small game (skipbo, left center right, and sting) a full size starburst and hersheys, Altoids, Reese's trees, marshmallow Santa, and Reese's cups, rolos and kisses.
Are you awed and amazed? At the least, its a fun conversation piece. ;)
All my best,