Next year, please send gravel

Obviously Bluet got lots of wonderful Birthday presents, but what occupied her most this weekend was the gravel on the paths of Hermann Park. She spent almost an hour of a lovely summery* Saturday sitting in the dirt, sifting small pieces of gravel with her hands. We gave her an empty plastic water bottle, which she then filled and emptied over and over again. We sat and watched, but she was lost in her own world, and could've stayed doing this for days *a lovely British summers day, 20C and a little sun.