$100 @ MAC
as christmas approaches they'll get nice eyeshadow sets and other lip product sets. I would wait for those - it's a fun way to try a few things with the best/on-trend colours for the season. also, the packaging is usually special and different which will make the gift "better" ;-)
I would definately get some of their delightful eyeshadow, very pigmented and tons of colors. Plushglass lipgloss is great too. I like the nude shades. For shadow I like Mac Me Over shades, like Honey Lust, Era, Patina, Satin Taupe, Sketch, and Carbonized. As for PlushGlass, I like Ample Pink, Wildly Lush, Pretty Plush, Nice Buzz, and Big Kiss.
The palettes in the MAC Me Over collection are very nice! The Angel Flame palette is very versatile, gives you some cute neutrals with a nice dark grey that you can use wet as a liner.
I agree about their holiday selections too, they have some very nice Limited Edition Holiday items coming up!