This is the filter cone holder I have been using for well over a year now.  Previously only available in Japan, Soto Outdoors has brought them to our side of the Pacific.  Of all the portable pour over filter holders I have tried this on is not only the lightest at 46g, but the most robust, most portable and just the right size for a single cup.  The cone holds itself in a semi flat position by tucking the support wings under the second coil of the sides.  Designed to take a commonly available No. 2 paper cone filter (Hario ore my Favorite).  

What you get in the box:

• Stainless Steel Helix Filter Cone
• 20 No2 Paper filters
• Mesh Stuff Sack