The Weapon Thermos experienced a brief period of minor popularity in the mid-80's amongst celestials with roles in the construction industry, but has since faded into obscurity. The artifact appears to be a standard 32 oz, stainless steel, vacuum-insulated thermos with handle and cup attachment. It can serve as a normal thermos for coffee, water, soup, et cetera, keeping them insulated at their initial temperature for 6-8 hours.
Upon activation, it can transform itself to a hand to hand weapon. The thermos must be full of liquid (32 oz) at time of activation and the conversion from thermos-to-weapon costs 1 point of Essence and it will revert itself back into a thermos (although empty) once combat ends or upon release. The thermos can become a weapon as small as a dagger or as large as an axe, but it can not change shape to include any moving parts--this restricts it from being nunchaku, for example.
Cost: 6 points