Light equipment for Vesteria?

While exploring Vesteria, some places like the spider cave are dark and I know that there are mushroom lights in there but sometimes I have to look closely at my monitor to tell if its a wall or more space. So, maybe there could be equipment, spell, or potion that either ups the brightness or gives off an aura of light.

It is true that exploring in the caves can be confusing. :anguished: