A friend gave us two champagne flutes marked with the date 2000 to use to celebrate the millennium. I would like to pass those on to some descendant to use in 2100. They are delicate and if not stored correctly, will probably be broken before the time arrives. I am thinking of making a box to hold them. I would make custom racks inside the box to hold the flutes. Any suggestions of what to use to line the racks that will provide cushioning lasting the 83 years? Or perhaps a better plan?