It may not look like much, but it has a large range of useable sounds.

Casio's digital-analogue hybrid "Spectrum Dynamic" synthesis

The original Portasound from 1980.

Small, but lots of potential, with some great FM voices and blippy drum pads.

Basic monophonic voices, but a rhythm section that's full of character.

The tiny red Tonebank.

A cult favourite, with strum-plate, and a rhythm that formed the basis of Gorillaz' "Clint Eastwood".

A rare keyboard with full-size keys and a nice mix of mono and polyphonic preset sounds.

A super-simple keyboard from the early 80s with analogue drums and squarewave voices.

The first keyboard I ever owned...