Adafruit NeoPixel Überguide
Incorporating scads of LEDs into an electronic project used to be a hairy prospect, a veritable rat's nest of wires and code. The arrival of dedicated LED driver chips brought welcome relief, offloading grunt work from the microcontroller and allowing one to focus on the application. Much simpler, but still not "Christmas light" simple.
Adafruit TSL2591 High Dynamic Range Digital Light Sensor
When the future is dazzlingly-bright, this ultra-high-range luminosity sensor will help you measure it. The TSL2591 luminosity sensor is an advanced digital light sensor, ideal for use in a wide range of light situations.
Adafruit BME280 Humidity + Barometric Pressure + Temperature Sensor Breakout
Bosch has stepped up their game with their new BME280 sensor, an environmental sensor with temperature, barometric pressure and humidity! This sensor is great for all sorts of weather/environmental sensing and can even be used in both I2C and SPI!
The Basics of Wet Forming Leather - Gold Bark Leather
If you're wanting to learn how to wet form leather, you've come to the right place. But I have to be honest, at this point I am still experimenting with wet forming. I have however, made enough mistakes to write a helpful post.