I spent three years in Ireland (2005-2008), and I remember this time with fondness.
if they could bring one thing from Ireland to Poland what would it be
I can only pick one
thing? Hm... difficult choice... I liked the bookstores - no matter if they were big ones, like chapters in Parnell Street, or quite small, like that Catholic bookshop in a side street in the city centre that for the life of me I cannot remember the name of, they were always well-stocked and with competent staff - a pleasure to visit. I loved hurling, a great field game: very fast, full of vigor, requiring a lot of bravery to play - pure joy to watch. I was not so keen on Irish food, but there was a place in Rathmines (my neigbourhood) were they sold delicious cod with chips, and those breakfast rolls with simply everything in them were tasty too :)
What else? The traffic was nice, even in Dublin - drivers were much more relaxed, and not nearly as reckless as in Poland. Lovely countryside, kind-hearted people, tolerable weather; I really enjoyed the time I spent there.
One thing? OK, if I had to choose one thing it would be hurling, I miss the crazy game.