OLEDs are simply the next step up in display technology. Sure, a regular LCD may work, but you should use OLEDs when you need a much brighter display, much better viewing angle and lower current consumption!
So you have an Electric Imp (or plan on buying one), what's next? Well you're going to need a breakout for it, here's where the Electric Imp Shield comes in. This shield gives you to the interface to adapt an Arduino-compatible board to a WiFi enabled Cortex-M3 core development module.
A 3A, 8-45V bipolar stepper motor driver - this breakout packs a mean punch for it's size! It has built-in overcurrent detection, undervoltage detection, overtemperature detection, stall detection, a 5-bit ADC, and a switch input, microstepping support and PWM drive voltage limiting.