ooooh I love make up, what a fab q! I have lots because it's a real hobby and quite often the free gifts they give out with them keep me going for a while.
I keep my make up in boxes and off the top of my head have something like:
around 15 - 20 mascara's (I know, I know) ranging from a couple of maybelline ones, to loreal, bourjois, max factor, couple of number 7's, Estee Lauders and Christian Dior
About 10 eye pencils (different colours) various brands.
About 8 glitter eye liners in various colours (silver, gold, blue, mauve, green etc etc)
a selection of eyeshadows in different brands and textures
Estee Lauder foundation
Revlon foundation
A few pressed powders (Estee/Clinique/No 7)
2 blushers (Clinique/No 7)
2 Bronzers (Dior/Bodyshop)
Benefit dandelion
I wouldn't have a clue how many lipglosses and lipsticks I have, they're mostly clinique and lancome juicy tubes though
Make up primers
Eye lash curler
Various applicators and brushes
Concealors (about 3)
highlighters (benefit moonbeam, ysl touche eclat etc etc)
If I have 5 mins I shove on a bit of foundation, pressed powder, blusher and then a quick sweep of a pencil eyeliner and a bit of mascara (I find if you use a lash lengthening one and then a volumising you get good separated but volumised lashes pretty quick).