I bought a cheap Display 5110 Mini LCD 84*48 PCD8544 Shield For Model B+/B (12 Euro Amazon link http://www.amazon.it/dp/B00TEYXTK6).
Using wiring library
apt-get install wiring
and some line of C code I build a binary (starts with simple init.d script).
This is the result:
It shows: Ethernet IP address, WiFi IP address, CPU usage and temperature and free RAM.
if you’re interested in the code , write me!