A piece of hard board screwed to the top of the board works well. I
imagine it would be great for electronics. You would not need to finish
it and if it gets damaged from the fire you started working on the
PM78749898 integrated circuit, you could just pull the screws out,
replace the top and keep geeken away(no offense woodworkers are geeks
too) . Particle board really soaks up the finish without much surface
improvement.