tbh, I would recommend just spending a few dollars on some stuff online. They're all going to be better than homemade stuff because they've been specifically designed to improve cubes. I've seen some videos online, but idk. I just got some Silk lube from the cubicle, and it works way better than any stuff I would use at home.
Only thing I tried was I think vitamin E oil?... idk, it was one of mom's cosmetics lol. Still, it would probably be about the same price, if not more, for an actual lube.