tools to make marks with? – check
tools to erase marks? – check
materials to make marks on? check
surfaces to to lay materials on? check
a space to make/erase marks on materials resting on surfaces? check
done!
tools to make marks with? – check
tools to erase marks? – check
materials to make marks on? check
surfaces to to lay materials on? check
a space to make/erase marks on materials resting on surfaces? check
done!