Use the services of Human United By Porall, and trigger your IFTTT services or devices. Human United provides different challenges together with others around reducing alcohol intake and much more. When joining a challenge, you could, for example, turn on or off a lamp or play some music when someone had a drink or, even better, play a winners song when everyone managed to succeed with the challenge.
The possibilities are endless. You can build advanced flows using other IFTTT compatible services. Such as pressing a RED Z-Wave button to retrieve a test request and send via SMS using Twilio to any recipient and then lighten up a green or red lamp, depending on their results.
Find more information about what you can do on: https://porall.com/IFTTT