Quantity   Component name
1 × Adafruit Trinket Pro
1 × MQ135 Air quality sensor
1 × DHT11 humidity/temperature sensor
3 × WS2812b RGB LED
1 × Logic level Fet, eg. BSS138
4 × Capacitor 100nF
3 × Resistor 100k
2 × Resistor 10k
1 × Resistor 270 Ohm (anything between 150 Ohm and 300 Ohm should work)
1 × Pushbutton
1 × Female pin headers for connection to trinket (not needed for breadboard build)
1 × Male pin headers for i2c, serial and buzzer connection
1 × PCB, Breadboard or perfboard