Here's a very cute little 0.91" Mini OLED Screen from 52Pi! These displays are very tiny, but also very useful! You can use them to display battery status, temperature, mp3 lyrics or anything else! The controller is an SSD1306 IC, and the display can be utilised via i2c or 4-wire SPI.
The display is made up of 128 x 32 individual yellow and blue OLED pixels, and each one is turned on or off by the on board controller chip via i2c
Screen Resolution: 128 × 32 Pixels
Screen type: 0.91"
Diplay Size: 25mm x 10mm
Module Size: 36mm x 15mm x 12mm
Pixel Pitch: 0.17×0.17
Pixel Size: 0.15×0.15
Working Voltage: 3.3V
Max. Working Current: < 100uA
Min. Working Current: >12.25uA
i2c & SPI Driver Support
Controller IC: SSD1306
Wide range of operating temperature: -40°C to 85°C