BWT, what are your foolproof beauty hacks?

As a someone who is still a hair/beauty novice in their 30s with little patience for getting ready, what are your foolproof, habits, items, techniques for looking polished on the fly?

Some of mine are:

  • Korean cushion foundation - can slap on a base layer of foundation in 1 minute or less and base looks even, natural, and glowy
  • Chanel Camelia base coat - shiny, healthy looking nails even though I have two left hands when it comes to painting them myself at home
  • Air dry mousse - a fine-strand, high-density haired girl's best friend