Carla Bell found Wakelet:

• Moderately increases student collaboration“Allowing students to compile resources from their homes, not just restricted to school hours.”
• Significantly improves teaching efficiency and productivity“I use it to share banks of materials I use in presentations and lessons, also resources for further study. It’s so simple to share with students and colleagues, I even have posters with the QR code on my door, so passing students just scan it with their phone.”