Question: How can I get a stain out of a lampshade?
Option 0: Unplug the lamp and remove the shade.    Remove dust by wiping with a dry microfiber cloth or using a vacuum cleaner attachment.    Combine a few drops of mild dishwashing liquid with warm water and apply.
Option 1: Unplug the lamp and remove the shade.    Remove dust by wiping with a dry microfiber cloth or using a vacuum cleaner attachment.    Combine a few drops of mild wood cleaner with warm water and apply.
Answer: 0