Tracing over sharpie marks with dry erase markers makes it way easier to clean depending on the surface. I've only tried it on non-porous surfaces though.

From experience, that works even on soft furnishings

Acetone is the solvent in the sharpie pen.

I was doing a remodel and exposed a wall covered in Sharpie graffiti from previous clientele. Painter looked dismayed. I sent for a case of rubbing alcohol and got rid of it.