Do you have a public picture gallery I can use for free:

Want to use public picture gallery to select images - You can search for the images as per your requirement in the EXAI's huge gallery.

Here is how to search the gallery:

Step 1: Add an image widget from the tool box by simply drag and drop.

Step 2: Edit the image widget by either clicking anywhere on the widget or clicking the pencil that appears at the top right corner, on hovering.

Step 3 :Now click on the search symbol (in orange) in the edit menu of the image item.

Step 4: Under the search tab (in red) in the popup window type in the keyword (in the text box) 

Step 5: Click the search icon (in greenSelect the image you want from the search results.

Step 6: Click on Done.