Some things to consider? Maybe pave the way for more German and European tourism. Literally "pave". Germans have a high speed autobaun, but maybe there can be an extention of it in Poland that leads to tourist destinations. I suppose the price of products in Poland would be cheaper than those in Germany. That would give many shoppers reasons to make weekend trips into Poland to load up on goodies and spend some Euro.
Poland is nicely situated as a "silk" road to Western Europe. Much to the horror of VeeDub and his unpimped autos, perhaps Poland can be a Mecca for motor heads and quality aftermarket car and chopper modifications? Provide some quality race tracks and simplify raw materials import laws (maybe a very low flat rate tariff tax?) and Poles will have the opportunity to demonstrate their highly skilled work for finished products.
All life is a mission to lead souls to Jesus, so there shouldn't be any shame in advertising Salvation to European visitors. Anyone who's driven through the USA (especially the South) will see signs dedicated to spreading Christianity (even in spite of other polluted decadency).