Here’s an airport amenity that’s as inexpensive as it is helpful:

Warsaw Chopin Airport (WAW) offers complimentary greeting boards to people meeting travelers at the airport.

The cardboard placards have a blank space on one side for a welcome message and an advertisement for the Chopin Airport’s Facebook page on the back.
The greeting boards are available free of charge and are available at the information desks in the Terminal A arrivals hall.
And no need to bring a marker. They’ve got a stash of those on hand as well.