Saturday Mac riddles 242

Here are this weekend’s Mac riddles to entertain you through family time, shopping and recreation.

1: Plane writing surface for ready-use documents.

2: Hidden collection of books for app use.

3: Communal area looks like it contains cloud storage.

To help you cross-check your solutions, there’s a common factor between them.

I’ll post my solutions first thing on Monday morning.

Please don’t post your solutions as comments here: it spoils it for others.