That's a very interesting and clever use of your Playmobil loco, Marco. I look forward to seeing more photos of other old lines.
We live just a few hundred yards from the route of the old Whitby to Scarborough railway line, most of which is now a walking and cycling route. Going south, a three mile walk takes it into Scarborough, including crossing what used to be the marshalling yards, but are now green spaces, with the walk ending in what was the old goods yard but is now a supermarket car park. Going north, the route takes us 20 miles to Whitby, much of it within sight of the sea and with a number of the old station buildings still there and being used as tearooms or homes. A very nice walk to take, although not all in one day!