For a better shower
Shower curtains often become sticky with time, and you have no idea how much it affects our shower experience. It seems small and insignificant, but once you un-stick those shower curtains, you would wonder how come you never did this before. The best (and by that we mean easiest) way to prevent a shower curtain from sticking is with Vaseline.
Applying a thin layer of Vaseline to the curtain rod would allow the curtains to slide easily across the bar and prevent stickiness. This trick is particularly relevant for the shower curtain, since the mixture of humidity and soap in our bathroom are what makes the shower curtains particularly sticky.