as for the hightlighter under the brow I use the MAC #213 Fluff brush. To pack on color on the moveable lid I mostly use H&M sponge tip applicators, cheapish an work well, except for the fact that the sponge part can come off if you are washing it... just have to put it back in place. other spong tips will do also, I did have a MAC sponge tip applicator but the sponge part itself began to crumble

bad quality for a high price. Then I use the MAC #219 Pencil brush for the lower lid, mainly to pack on the black e/s to line and to give the smokey eyes effect.
However, the most important tool are still my fingers, especially for blending dark colors on the upper lid with the highlighter
HTH! And btw thanx for your karma Bluestar07!