I haven’t really gotten involved with Pinterest, but I know plenty of folks who have. The way I understand it is that you can choose pictures that speak to you in some way and then “pin” them on your board. You have to join to have a page but others can see public pages.
I found this page filled with photographs of Apple activities done in early childhood settings. I thought you might like to browse through it and find stimulating ideas for your program. Here is one sample from the page….