The Advanced Wiring System introduced in version 0.14 has been extended so that switches can be connected to the following so that they can be enabled and disabled:

• Arrow boxes
  • When disabled, are just wooden boxes that are destroyed when touched
  • Disabling them can remove unwanted obstacles or parts of an arrow chain you don't want
  • Conversely, enabling them might be necessary for destroying an obstacle
• Dynamite boxes
  • When disabled, behave the same as plain steel boxes
  • In terms of puzzles, function similar to arrow boxes, acting as a means of enabling or disabling an obstacle
• Circular saws
  • When disabled, player can safely walk over them
  • Generally speaking, this is something you'll want to disable to remove an obstacle
• Conveyor belts
  • When disabled, they no longer move the player or boulders
  • As switches can be placed on top of conveyor belts, allowing them to be toggled opens the door to some interesting looping devices. What happens if one conveyor belt is used to repeatedly turn something on and off? What if that is also a conveyor belt?

These mechanics are explored at a basic level in the new tutorial level Switches II. Give it a try and let me know what you think on the Discord.