Adafruit QT Py RP2040 [https://www.adafruit.com/product/4900] ($10)
Adafruit PiOLED - 128x32 Monochrome OLED Add-on for Raspberry Pi [https://www.adafruit.com/product/3527] ($8, normally $15)
Adafruit LSM303AGR Accelerometer Magnetometer - STEMMA QT Qwiic [https://www.adafruit.com/product/4413] ($13)
Adafruit Sensirion SHT40 Temperature & Humidity Sensor (STEMMA QT / Qwiic) [https://www.adafruit.com/product/4885] ($6)
Adafruit LPS22 Pressure & Temperature Sensor - STEMMA QT / Qwiic (LPS22HB) [https://www.adafruit.com/product/4633] ($7)
Battery [https://www.adafruit.com/product/328] ($15)
Battery Monitor [https://www.adafruit.com/product/5580] ($7)
Adafruit LTR390 UV Light Sensor - STEMMA QT / Qwiic [https://www.adafruit.com/product/4831] ($5)
Adafruit Mini GPS PA1010D - UART and I2C - STEMMA QT (w/RTC) [https://www.adafruit.com/product/4415] ($30)
Adafruit AS7341 10-Channel Light / Color Sensor Breakout - STEMMA QT / Qwiic [https://www.adafruit.com/product/4698] ($16)
GY-906 MLX90614 Non-Contact IR Infrared Temperature Sensor [https://www.amazon.com/gp/product/B0B63K5V7T] ($12)
Adafruit BME680 - Temperature, Humidity, Pressure and Gas Sensor - STEMMA QT [https://www.adafruit.com/product/3660] (Replace SHT4 & LPS22HB0) ($19)
Adafruit SGP30 Air Quality Sensor Breakout - VOC and eCO2 - STEMMA QT / Qwiic [https://www.adafruit.com/product/3709] ($18)
Adafruit 9-DOF Absolute Orientation IMU Fusion Breakout - BNO055 - STEMMA QT / Qwiic [https://www.adafruit.com/product/4646] (Replace LSM303AGR) ($30)
Adafruit MLX90640 24x32 IR Thermal Camera Breakout - 110 Degree FoV [https://www.adafruit.com/product/4469] ($75)