Here are a couple of prop ideas that you may consider bringing to make your mini photo session unique:
Balloons, bubbles, books, flowers, graduation caps, favorite family heirloom, etc. Bring what you like if you feel it fits your story, family/group style and the scene. Just try to keep it simple so it’s not too much of a distraction for your pet or your children.
And let's not forget that the outdoors and location chosen may offer some fabulous natural props!