I love simple kids toys, especially wood ones. Despite the fact that Richard Upchurch's Voice Recorders happen to have their fair share of electronics, they are still simple and straight forward.
The Voice Recorder with Pitch Control Knob has a red record button that you hold down while recording. When finished recording release the red button and press the black playback button. Upon playback turn the knob to adjust the speed/ pitch for endless fun and laughs! The record time is just over 30 seconds.