Several suggestions. - An oxygen connection on the charging station in the garage to refill the rover with oxygen. - Charging racks like the battery charging rack for O2, CO2 and possibly H2O all of them, including the battery charging, to go into the lobby. it would make that a bit more usefull and it would make sense to have it right at the exit to the base where you could quickly replenish your essentials for outside tasks.Tbe CO2 station should also have a little inventory for the tool. 

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