Today I tested a small 0,96″ OLED display with 128×64 pixels.
It is a common SSD1306 display with I2C.
The hook up is easy:
Display -> UNO
SDA -> A4
SCK -> A5
GND -> GND
VCC -> VCC (5V)
I use the MultiLCD library, which works fine.
The OLED display I bought for 2,69 $
Other links:
http://arduino-er.blogspot.cz/2015/04/hello-world-096-inch-128×64-i2c-oled-on.html
https://blog.jokielowie.com/en/2016/03/wyswietlacz-oled-ssd1306-i-raspberry-pi/
http://gadjetsblog.blogspot.cz/2013/07/diy-chrono-shopping-list.html