Here’s a fun thing to do: Buy a whole basket full of drugstore mascaras, dump them on a table, and stare at them through a kaleidoscope. For one, the packaging is crazy—like an explosion at the neon plastic factory, resulting in a bunch of really great, tactile pieces you can’t stop picking up and dropping in your purse. That’s at least half the fun. The other half of the fun? Being able to afford three different tubes for three different lash looks (which, quite frankly, are just as good as what you’ll find at a department store makeup counter) that you can …