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ElectroMagic Tools, because it contains Mjölnir and a "harvest festival" sounds like an old-Norse/Germanic ritual to me.

Though of course modern religions (like Christianity, Judaism and Islam) have their own versions of this ritual as well.
 
Metallurgy because it adds a lot of tools

Celtic traditions (paganism, Druidism) and Wicca also have a harvest festival. It's called Samhain (pronounced sow (like a female pig)-ain
 
Galacticraft, because it's the only other mod I can think of that transports any gases through pipes.
Unless of course you count PneumaticCraft, which technically only pressurizes the gas in its pipes to transfer pneumatic energy.
 
Pneumaticraft
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