SHHHOWERCAP, The Minx ($43, available at SHHHOWERCAP)
Normally, I wouldn't suggest that anyone pay more than $5 for a plastic shower cap that can easily be purchased at any local convenience store, but this list is all about doing the most and treating yourself so why not invest in a chic cap that completely repels moisture? If you're not trying to get your hair wet, this cap really is a life saver.