Try this
- Agree on the bag’s contents and who will carry it at each relevant point.
- Keep personal valuables or private items under their owner’s control if shared access is uncomfortable. Check essential tickets before leaving rather than relying on the bag’s presence.
A worked example
“I’ll carry water and tickets, but please keep your own valuables.”
An invented example to adapt, not a real exchange or a script you have to follow.
Before you leave it here
Do not place private items in a shared bag without considering who may open it.