Warning: Do not attempt to build these circuits without proper safety precautions and/or extensive experience with electrical engineering. Your toaster may catch on fire.
For those who enjoy pushing the boundaries of what is considered acceptable in a kitchen appliance, behold the following toaster circuitry variants:
This variant involves soldering a miniature circuit board into your toaster, which will grant it the ability to toast bread to the precise temperature you desire.
This variant involves harnessing the power of thermoelectricity to toast your bread to perfection, with the added bonus of generating a small electromagnetic field that will make you feel like a mad scientist.
This variant involves injecting nanoscale particles into your toaster to create a self-healing, self-repairing circuitry that will toast your bread to the perfect shade of brown.