1. SYMMETRICAL FLOW DRAWING:
https://makeamarkstudios.com/symmetrical-flow-drawing/
https://makeamarkstudios.com/symmetrical-flow-drawing/
2. REPEATING SHAPE DRAWING: Assign yourself a shape (or 2) and create a doodle design with only that shape. Let your brain relax into the doodle and don't be concerned with how the design turns out - just keep drawing until your paper is full or the design feels done.