I did a remix of the chimney of the Christmas gingerbread house by PA1_MAKER on Cults3D. Sadly I do not have pics of the inside but I think I used 3mm red LED's up through gumdrops on the chimney.
Original Design
https://cults3d.com/en/3d-model/various/christmas-gingerbread-house-no-supports
CHIMNEY_CAP_-w-Hole.stl | 1.9MB | |
CHIMNEY_w-Cutout.stl | 534.7KB |