> There's even a special lube for making your wire slide through the conduit easier.

A fellow engineer had to wire (Ethernet) an office, but he didn't have the silicon-based lubricant, so he bought vegetable lard at the corner shop... since there were conduits, it didn't really smell bad unless someone needed to replace a wire. It was surprising that no insect tried to eat the lard for the couple of years it lasted.