Actually, they have a very active preservation effort going on for the Bromberger Wirsitzer line. They've restored miles (even more kilometers!) of line to operation, as a significant part was left intact in the weeds after diesel freight operations petered out during the mid-90's. They have a facebook page, "Forum Wyrzyskiej Kolejki Powiatowej Bialosliwie". That's a lot of consonants, but it should bring you to their page which has fascinating stuff about their progress, pictures and Polish words which apparently translate strangely.
They have the great advantage of having these lines active until very recently. Quite a different story than the Maine Two footers! I do, however feel like I get at least a glimpse of Maine's tiny common carriers while watching their laid-back European cousins!