Moodbeam, a gadget which links to a mobile phone app and web interface, has two buttons, one yellow and one blue. The idea is that you press the yellow one if you are feeling happy, and the blue one if you are sad. Aimed at companies who wish to monitor the well-being of staff who are working from home, the idea is that employees are encouraged to wear the wristband, and press the relevant button as they see fit throughout the working week. I hope it works.
