There will be 2 variants of storage boxes. Smaller ones will be intended for fast and efficient storaging of your valuables. Bigger ones will be used for a specific storage and you’ll have to secure them from outer threats (mobs). Both kind will be craftables only, meaning that the only way to get them will be by crafting. You’ll be able to set them anywhere you want (no restrictions regarding that), most commonly in bases/shelters.
There is only one variant of furnace available for now. It transforms your raw gathered resources to a more refined (better) quality (example Metal Ore -> Metal Ignot). This transformed element can be then used for crafting better items (bigger storage box, weapons, other devices). Furnace works only if “fuel” is added as an energy source. The primitive fuel is wood, but you can use oil, coal or any other wooden element (wooden floor, foundation). So imagine that, instead of destroying your wooden base and previous elements going to waste, this way you’ll actually get something in return.
When smelting there will be a variable duration period – for smelting rare items a longer time will be needed due to more difficult smelting process. This furnace will fit nicely to your base/shelter, and you’ll have the option to make several of them.