Do you have obscure minorities in your country that are almost forgotten? We have these:
>Rusyns
They live in the far Norteast. Language is related to Ukrainian, but they consider themselves a separate ethnicity. Many of them are assimilated and you can recognise them only by their religion, which is Greek Catholicism, whereas Slovaks are traditionally Roman Catholics or Lutherans.
>Gorals
You can find them in the mountainous border areas near Poland and Czech Republic. They live in the mountain valleys, language is related to Polish.
>Carpathian Germans
Came here in the Middle Ages to repopulate the land after plagues and Mongol invasion. Were concantrated in mining towns of Central Slovakia and big cities. They use dialects that are hard to understand for standard German speakers. Mostly Protestant. Only a few thousands left after the post-WWII expulsion.
>Croats
In the Southwest. Descendants of refugees from the Ottoman wars in the Balkans. Mostly assimilated.
>Valachs
Romance speakers, shepherds in the mountains, only speak Slovak for several centuries.
>Jews
Only a few thousands left. Even less of those who stayed observant. Mostly in big cities.