I'm not sure if there are closer ski areas, but if there are, then that would be a possible option.
We don't have a lot of hills here. This is land of lakes ;)
You can check
ski lift in
Lidzbark Warminski (60km east) e-krzyzowa.pl/s1-krzyzowa_gora
ski lift in
Elblag - Góra Chrobrego (20km north) gora-chrobrego.pl
ski lift in
Olsztyn - Rus (65km south) kartasiowka.pl
ski lift in
Goldap - Piękna Góra (175km east) mazury.info.pl/atrakcje/goldap-wyciag/index.html