Great for scanning activity. I laminate mine on A3 and use a whiteboard marker so they can be used over and over. You could do this in a group and change pictures around after a set time period, just need a quick wipe over.
I love this website. I can refer back to it in a pinch when looking for a quick project or activity for the community members I work with. There are plenty of tips, as well as instructions for the activities which are so helpful.
Find The Hidden Objects - Library