Here is a game I came up with to play at my group meeting tonight. I opened an MDS blank 8.5x11 page and "stamped" an image from ten different sets on the page. You can then print directly from MDS, or save the file as a JPEG and insert it into your favorite word processing or desktop publishing program.
The object is to identify the stamp set the image came from--most correct answers wins.
You can make this game more challenging by adding in images from exclusive sets only available through MDS, or by including more images to identify. Obviously, you will want to adjust the difficulty level based on your audience.
For your convenience, here is a PDF of my Birds & Bugs version of the MDS Images game. All of the images are of animals, butterflies or birds. There are ten images, so this game should take only a couple of minutes to complete. Feel free to copy & use at your meetings!