Chickpea likes collecting rocks and sticks.  Even if they're not really rocks, just chunks of concrete.  She also became rather attached to one particular stick.  When it broke, she used duct tape to put it back together, but I'm afraid it'll never be the same.  Apparently, she decided she didn't want her collection strewn all over the yard, so she gathered them in a pile by the front door.

With several old trees in our yard and a long gravel driveway, there's plenty more where that came from.