OpenSCADDay 24 of #scadvent opens the last door which has a cozy little cottage designed to 3d print quickly with fixed wall thickness. Size and decorations can be easily customized in the script.
Impossible Umbrella 
Day 23 of #scadvent concludes the 3 part series of LED figurines with an angel.
Day 22 of #scadvent welcomes a penguin. While not bothered by the cold, the Christmas hat is still needed.
Day 21 of #scadvent is just cubes, lots of dancing colorful cubes.
Day 20 of #scadvent shows how math in hiding in nature. Sunflower seeds often grow in spirals following Fibonacci numbers, https://oggardenonline.com/why-do-sunflowers-follow-the-fibonacci-pattern.html has more info the topic.
Day 19 of #scadvent is a customizable gift box which can be printed quickly in vase mode.
Day 18 of #scadvent is part 2 of a series of 3 LED enclosures for the small and cheap battery powered LED strings. This time it is a Christmas tree featuring the multi-color version of the LED string.
Day 17 of #scadvent brings back the gingerbread man, this time as bookmark for those who love reading books.
Day 16 of #scadvent shows how to create a nice parametric name tag. Use the Customizer to see what parameters are available.