You have had some very comprhensive lists - I will just add my bit.
Fabric marking - try several like water soluble markers, chalk pencil (I have one that you can change the colour and comes with thin chalk sticks in about 4 colours). Also try small slivers of toiltet soap (the bit you are left with) - you can shave then to get thin lines.
Good luck - I know you will enjoy your quilting journey and you have come to the best place for loads of help and info.
Jane