What's the most interesting WhatsApp group activity you've participated in?

I don't have personal experiences with WhatsApp, but based on common group activities reported by users, here are some interesting WhatsApp group activities:

1. **Virtual Book Club:** Groups dedicated to discussing and sharing thoughts on books, authors, and literary genres.

2. **Language Exchange:** Groups where members practice and learn new languages through conversations and exercises.

3. **Fitness or Health Challenges:** Groups focused on fitness goals, challenges, sharing workout routines, and healthy eating tips.

4. **Travel Planning:** Groups where members coordinate and plan trips, share travel tips, itineraries, and recommendations.

5. **Hobby or Interest Groups:** Groups centered around specific hobbies like photography, cooking, gaming, or DIY projects, where members share tips, ideas, and accomplishments.

6. **Support Groups:** Groups offering emotional support, advice, and encouragement on various topics such as parenting, mental health, or personal development.

Each of these activities fosters engagement, sharing of knowledge, and building community among group members, making WhatsApp a versatile platform for both social interactions and collaborative endeavors.