This is a very simpl 3d printed perennial desktop calendar, showing one month at a time. The actual date indicators are small cardboard cubes, which you can craft from a printable PDF. The calendar is basically a grid of 7 x 8 cells. Each cell contains a cube corresponding to that particular day. The cube has a red and a black and white side. You can indicate the current day by turning the cube to the red side. For a new month, you rearrange all the cubes so that they fit the month. For instance, January 2024 starts on a Monday, so day 1 goes into the left-most column. If you want your weeks to begin with a Sunday, you can also rearrange the day-of-the-week cubes at the top of the calendar. This calendar requires a bit of patience: The monthly rearrangement of the date cubes is a ritual which takes a bit of time. And if you happen to topple the calendar, the cubes may fall out. You have been warned – don’t come complaining that this is more work than your regular preprinted wall calendar. For more details, see https://digitprop.com/2023/12/3d-printed-perennial-monthly-desktop-calendar/