But back to the "lot of makeup". ;)
I use the same eyeshadows 85% of the time. When I want something extra or have more time, I'll bring out my train case and play with all of my colours.
MAC eyeshadows are among my favorite, and sometime last year I switched from buying the full size shadows to getting them in the refill pan sizes. They fit neatly in the MAC 15-shadow palette. This, as well as my Urban Decay palette, look neat propped up behind my glass vases.