I am currently working on a couple more... Now that I am more comfortable with I2C it opens up a bunch of things.
DS3232RTC Real Time Clock + Temperature Sensor. I have the Adafruit I2C breakout board and I will interface it to the Esquilo with a 1602A LCD being used to output the time and temperature. There was a pre-existing Esquilo library for this one, so I will just be providing some demo code + wiring diagrams, etc.
HTU21D Temperature + Humidity Sensor. Similar to above, I have the Adafruit breakout with I2C, output will be to LCD. Again, this one already has a pre-existing Esquilo library so I will just be providing the tutorial info.
BMP180 Temperature + Barometric Pressure. I have the SwitchDoc Labs WeatherPiArduino board. This is an I2C attached device and output for the tutorial will be to the LCD. This one I am porting the library from both Arduino C/C++ as well as some LUA code that I found. I will hopefully have it done soon.
A couple of non-sensor parts I could do are the Adafruit 32KB I2C FRAM breakout board and the Adafruit ADS1015 2 Channel ADC I2C board.
I also have the following sensors on order which hopefully will make it here soon. Shipping from China can be slow....
DS18B20 Temperature Sensor (pre-existing Esquilo Library)
DHT11 Temperature + Humidity Sensor (pre-existing Esquilo Library)
BMP280 Barometric Pressure Sensor (newer version of BMP180, see above)
LM35 Temperature Sensor (will probably have to port library from Arduino)
AS3925 MOD-1016 Lightning Sensor (will probably have to port library from Arduino)
I've also got a 1602A LCD with the I2C interface, one with the I2C and a keypad and a 2004 (20x4) LCD screen
I am open to any feedback on things y'all would like to see or if you would like any of these to be prioritized over the others or anything like that.