Streugutkiste
thingiverse
This is a sandbox like they are used in vienna in winter. Some of them survived in vienna. But most of them are changed to plastic. In Vienna they were brown or looked like this https://www.miniaturbahn.com/product_info.php?cPath=1079_644_646_2189&products_id=20209&osCsid=t3clq21ljud6v992u3up4eo1ogfgpf3j
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