What rewards do you want to grind for?

I've only spent money once on this game and that was years back. I always managed to grind out the battle pass and buy the next. Other than that, I can only remember grinding ranked way back when Masters/pred rewards were actually decent imo. The frequent release of free 20packs for doing easy enough challenges. These were good incentives to grind for.

Point is what rewards do yall grind for? AND What rewards do you want to see that is worth a grind?