I have an HO German worktrain in a display case on my bedroom dresser. Purchased a couple of pieces at a time during several work related trips to Germany.
My daughter keeps an engine & tender that I gave her several Christmases ago (maybe 7 or 8?) on top of a bookcase in her bedroom.
I have a prewar AF 3/16" engine & tender that I had planned to take to the office, but since I only work in the office a couple of days per week and sometimes travel, I keep forgetting to do so!
Jim