Not every accessory will be a edge connector accessory. There are also kits designed to give you tons of small and easy to use sensors and what you need to make them work. We recommend these kits to people who want to experiment with different things without having to worry if it works with the Brainpad.
These kind of kits can include the bare necessities or a huge amount of electronics that it would fill the whole page if we were to list and explain them all so here are just a few as an example
From left to right, Ultrasonic Sensor, potentiometer, LEDs
From left to right, Buzzer, Thumbstick, microphone