I bought this Fujitsu Stylistic 5020D tablet PC last year in order to play Open TTD. Last month I had found the original docking station and keyboard in a Goodwill like shop,
CP165911 | Fujitsu Siemens Stylistic ST4120 Tablet PC | USED | Laptops · PC User
Found a tablet PC from the early 2000s for £10 that runs Windows XP. It still works and the battery holds charge. I put AoE2 on it. : r/ThriftStoreHauls