Goal and options: Securing and reinforcing the the joints.
output answer: Take all reaming corner brackets and screws and reinforce all the joints making sure all screws completely tighten.

Goal and options: Glue stones together
output answer: Using a piece of fine grit sandpaper rough up the area of stone you need to glue,Use a few dabs liquid epoxy on the bottom of a stone and apply to another stone

Goal and options: To keep your shoes from getting wet in the drizzle.
output answer:
Use some water repellent on shoes when you first get them.