I have the big bag in the hotel and the small bag for touch ups.
I bring my face primer, liquid foundation, concealer, powder foundation, contour powder, blush or lipstick (I use lipstick for blush a lot), setting powder, eye primer, black gel liner, black pencil liner, brown pencil liner, white pencil liner, black and brown shadows to set the liners, a cream colored shadow to set and for a highlight for the eyes, any shadow I'll need for the cosplay (usually a color close to my skin color and a brown for contouring), mascara, lip primer, lip balm, and whatever lipcolor I need.
For the small bag for touchups, I bring my setting powder, blotting papers, contour powder, blush, all the pencil liners, lip balm, and the lipcolor I need for that day, a hand mirror, and any brushes I need to apply my makeup.
I also have a third bag that I just fill with all my makeup brushes.
What's this for? It's a wig.
What's it for? To disguise yourself from yourself.