You can put up anything. Plywood, pallet wood. wood planks, corrugated panels, etc. Some just paint a light color for brightness.
You can apply the corrugated tin panels.
Here's an idea for using laminate: https://www.youtube.com/watch?v=xDo5jhLZDfI
Maybe consider the metal panels which are now available.
Just paint it a dark color.
this makes me think of corrugated metal!
I would add some beams, metal to begin with
Hi Lisa, you can just put some board up above the roof beams and paint it all one solid color, like a gray or what ever you like
I just saw a garage makeover where they scrapped the popcorn from the ceiling without using water and such and then added some thin stripes of trim to make a coffered look and then painted it. It looked really good.