My tried and true foundation has been this e.l.f. acne fighting foundation. Since it has tea tree oil it keeps my oiliness at bay longer than a lot of matte foundations and it's light but buildable so it's perfect for any time of year. Since I first bought it I've used it pretty much every day and have had to repurchase it a couple times.
This one should be a given but my Makeup Revolution Naked Chocolate Palette is my favorite amongst all my palettes. I use at least one color from this palette every single day and have hit pan on a few colors. It's mix of shimmery and mattes make it the perfect neutral palette.
This Maybelline Fit Me Matte + Poreless powder is my favorite. I use the shade translucent and although I'm not usually picky on powders this one just seems to leave my skin flawless. I've repurchased it many, many times and use it every day.