I'm a Leader for Portuguese scouts. We had some challenges for them like: build something out of chopsticks, prepare a song, create a little pig bank with wishes for the post-covid era, and so on.
Last week we decided to play Among us, GarticPhone and Skribbl.io through our own Discord server. It is something for them to relax and connect with us
This book has tons of great ideas: https://www.amazon.com/INDOOR-IDEAS-Activities-Kids-Outside/dp/B08P3SBN7N? The ebook is just a dollar, but I recommend getting the paperback instead of the ebook version since it's easier to just pick a random page in a real book.