Erin, a TV and web host, says she organizes her makeup case based on what she uses every day. “The things I use the most are within easy reach, and my ‘special occasion’ products find their way to the bottom.” she says. With a layered case like the one pictured, you can easily fit any shape, size, color, brand or type of product into the cubbies. Good makeup organization doesn’t discriminate. (Well, except maybe in this case — Erin seems to have separated her stout, round pots from her long, lean pencils and brushes. Product segregation, anyone?)