Erasable yet bold crayon for Empire Builder Games (e.g. Eurorails)?
I don't think you will get a definitive answer, but probably just lots of suggestions. There has been.discussion about this question before on BGG. You are going to get a range of answers:


Crayola Washable Crayons.
China Markers.
Dry Erase Markers
Wet Erase Markers.
Standard Crayola Crayons