One illustrative haptic output device disclosed herein includes a connector configured to couple the haptic output device to a modular computing device. The modular computing device includes an outer housing configured to mechanically and electrically couple with one or more external electronic modules. The haptic output device also includes a receiver configured to receive a haptic signal from a processor. The processor is configured to receive a signal; determine a haptic effect based in part on the signal; generate the haptic signal based on the haptic effect; and transmit the haptic signal. The haptic output device is configured to output the haptic effect responsive to receiving the haptic signal.