Here is some info on the month-by-month CD box and cases:
Gallery at Splitcoaststampers
jkiah's Gallery at Splitcoaststampers
The inspiration (and templates) came from Paper Crafts magazine (Oct & Nov 2004 issues). I altered each calendar page a bit to make it fit the cd case - the originals in the magazine are for a 8 x 8 scapbook. The CD case measure 5 x 5 inches.
The CD cases are from Uline.com - they come in 100 count-cases:
https://www.uline.com/ProductDetail.asp?model=S-7073
I searched every craft store in my town for a square box that would fit cd cases - I had no luck so I was forced to make one. Basically, make two boxes, one a bit larger than the other.
I made the box from heavy poster board. I used the cd cases to get my measurements. I cut the posterboard to make two squares - box top is a 17.25 inch square and box bottom is a 15.75 inch square. I then scored the square into thirds vertically and horizontally - every 5.75 inches for the top. For the bottom, score every 5.25 inches. Make a cut on the score lines of the top third middle square and the bottom third middle square. Then fold into a box shape and adhere with strong glue - I used rubber cement. I trimmed some of the bottom edge off the box top (about 1/2 inch) once I glued it together because it was too long.
I hope this makes sense - happy stamping!