User blog comment:Mrob27/Signs in a Signless Game/@comment-4731165-20120104025716/@comment-4583259-20120115055221

Yes, the "graveyard of Disks" is the best approach -- or you can use other droppable objects, like Magnets, lumps of Biogel, etc. Adhesive and Medkit might stand out more from a distance. The game shows these objects even when they're really far away.