Ok, so you're in a new country. You don't speak the language well. You moved into a house that's a new build, so you don't have any neighbours yet. BUT THEN. Someone moves in next door. What is the move here? Gifts? Baked goods? Flowers?
@BathysphereHat I would think it's safe to assume that a local florist would be up to date with good flower communication (or at least not making a faux pas). They should also know what flowers are dangerous for pets and have some ideas on substitutions. (Or you could ask if they can do paper or silk flowers for those ones.)
Flowers are probably the safest bet, food is kinda fraught too and that doesn't leave a lot of good options.