So I tweaked my Desk calendar card a little so you can make an actual card - with a front that detaches so you can use just the calendar stand part on your desk - and uses two 4 x 6 card blanks (although mine seems to be 4.25 x 6 - cheap card or the actual intended size, I wonder?) rather than having to cut the base.
The card front slips under a strip of cardstock on the underside of the stand to create a full "card"