Take your two examples from the Week 1 Exercise 1 and recode them using the reactor principle. Is the result effective with the reactor method? If not, how can you redesign the code for a more interesting outcome?
Use the vector code in the example to produce a flowing arrangement of geometric forms. Consider taking Week 1 - Exercise 2 as your starting point for the geometry.
Create two new examples by modifying the code with different reactor shapes that respond not only with size change. Try rotation, colour change or deformations.