Goosechase

Goosechase is an online platform made for running real-world scavenger hunts. You take a photo or video of each challenge (e.g. snap a pic of everyone in your group reading a book) and earn points for each successful one. Split the meeting into (up to 3) breakout rooms, and make sure they select the right team. Then they can go about completing different challenges, finding specific things in their house, or whatever else you can think of. It's a great game to get creative with. 

Most of your players will need to download the app, and the leader(s) will have to set up a free game on the website which can take around 20 minutes, but you are easily able to reuse challenges in future games. Set up a free game here.