A standard terraforming atmospheric condenser and emissions unit (AECU), commonly called a CO2 Stack - for use in table-top wargaming in a generic SciFi setting, played at 6mm scale.
Some planets want a little more global warming to properly liven things up. Print one or two of these CO2 Stacks just to up the thermostat temp for a slightly more comfortable winter; or print a thousand AECUs and really lift the sea level on that Class IV dirtball of a Periphery world to increase the coastal property value of the little survivalist compound you have hidden up in that hinterland retreat.
