In Illinois (setting for the strip), she might plan to make homemade ice cream (in summer) or spread it on her driveway or sidewalk to melt the snow (in winter).
I recognize some of them. Upper left is from Doonsberry, Frazz from Frazz, Zebra neighbor from Pearls before Swine, and Calvin from Calvin and Hobbs. I recognize the dog but can’t place him. The cat might be from Lio.
Move the raw mail into a series of pigeon holes to prepare it for delivery.