Very cool, mahvin. I'm thinking if you put something small and heavy inside it would help stabilize it on a surface - a large stainless steel or brass nut; a rock.

Here's a trick for non-picture backgrounds.
Open a new 400x400px image with white background and leave blank.
Render the calendar using this background.
When the calendar is complete, go into the layers dialog and turn off the background, all of the calendar text layers and the border layer. Only the calendar backgrounds should be visible.
Merge all visible layers. (If you want, you can turn this new layer off, turn on all the text layers and merge them also, which is what I did; I ended up with a border layer, a text layer, a calendar-background layer, and a page-background layer.)
Select the calendar-background layer.
Choose the Select-by color tool and click on the calendar background area.
Now you can use the Blend tool to place a gradient in the calendars, or fill with a pattern!

very nice Bob....

@Bob: good thinking there on the gradient. Looks great.

I opened a pattern as image and used it in this one.

I love all the different ways we can enhance the look of this platonic calendar. My wife took the one I made to work and got all sorts of comments on it. So, I'll be making more, for sure. Only this time, (this is a good suggestion for anyone who decides to make a few of these) instead of cutting out the spaces in between each pentagon, cut it down the middle instead and fold them back as flaps, so it's much easier to join the two pentagons together. Cutting the entire area out makes for some tedious aligning of sides.

that is really cool "O".... love the bubbles.....

Thanks Molly.

Here's a photo of my calendar done on white card stock. I used a dead ballpoint pen to trace along the fold lines (yeah, try and find one when you WANT one), they fold better that way.

I used scotch tape on mine. It was done just to see how it turned out.

Very nice!

Is there a calendar script that gives these shapes??? Or am I missing something??

Saulgoode's Chiselapp page.
The script will build the flattened dodecahedron which when printed, cut and folded makes the 3D calendar. It can use 1 - 12 layers of images to apply background images to each calendar panel, or it is possible to combine blank backgrounds to fill with patterns, gradients or whatever. Read back through this thread for all sorts of tips and enjoy!

I started a discussion on it back at this post. I should've probably started a new thread but I wasn't really expecting such a prodigious response.

The topic has been split.

I would also point out that the paths for the pentagons for each of the months can be found in the Paths Dialog (along with the paths for the four tabs). One could create a selection from all of these paths (holding down SHIFT while clicking on the red Path To Selection button can be used to combine them).

Probably no easier than your suggestion, merely an alternative.

I didn't know you could do that with paths. I've been merging paths to be able to do the same thing. Doing it your way, I don't have to make duplicates if I want some separate and others joined.

This is my first test (with no script). I am going to download the script and try it out!

I downloaded the latest script and when I run it, with facets enabled, I get the following error. Then if I click on any layer, after clicking ok in the error box, the image comes up beautifully. Very odd indeed.
I ran the script once and got the image, then again without the facets, to get the fold lines and filled in the tabs. This is my result, after lowering the fold layer.

That is way beyond cool Greg. I will be interested to see it all folded up. Hope you don't get tied in knots with the scotch tape the way I did. lol. very pretty.....

My original image put together. I wasn't going to show how horribly I put it together, but this is it. And I did get my fingers taped together. I have to go through my art case for double stick mounting tape for the next one!

Oops. There should be a space between "facet-image" and "channel" (not a hyphen). I will provide an updated version tomorrow. I just upgraded my system this morning haven't yet set up the synchronicity with my Chiselapp repository.

Hey Saul, You rock! I made the change in the script and it's problem solved!! The script is running perfectly!!