Please choose who you are:
... ...

"I am traveling."
"I can bring you something."

You can deliver goods to
locals and thus receive a service in
exchange (eg airport pickup, party
invitation, city tour, insider tips etc.) or
earn some money or get in contact with
locals or just do someone a favor.
... ...

... ...

"I am at home."
"Please bring me something."

You can ask traveling
people to bring something from
there or the duty free (eg alcohol,
tobacco etc.).

... ...