3D Model: A Primitive Survival Water Filter Made Entirely From Natural Materials. The Body Is A Solid Carved Wooden Funnel Or Hollow Bamboo Tube, With Opaque Wooden Walls — No Holes, No Stains, No Leaks. The Wide Top Is Covered With A Piece Of Rough Cloth, Tied Securely Around The Rim With Vines Or Twine. The Inside Is Filled With Natural Filtering Layers (sand, Charcoal, Pebbles), But These Are Fully Contained And Not Visible From The Outside. To Suggest Its Purpose, There May Be A Subtle Hint At The Very Top Edge — Like A Faint Texture Under The Cloth Showing That It Is Packed — But Nothing Leaking Or Spilling Out. The Bottom End Narrows Into A Drip Point For Water, Clean And Dry. The Object Should Look Handmade, Rugged, And Functional: Rough Wood Or Bamboo Texture, Worn Cloth With Frayed Edges, And Natural Vine Bindings. Low-to-mid Poly, Stylized But Realistic, Designed For A Survival Crafting Sandbox Game.