"What do you mean - nothing?" demanded Mary Poppins, drawing herself up and looking as though she had been insulted.
...
"From the carpet bag she took out seven flannel nightgowns, four cotton ones, a pair of boots, a set of dominoes, two bathing-caps and a postcard album. Last of all came a folding camp-bedstead with blankets and eiderdown complete, and this she set down between John's cot and Barbara's.
Jane and Michael sat hugging themselves and watching. It was all so surprising that they could find nothing to say. But they knew, both of them, that something strange and wonderful had happened at Number Seventeen, Cherry-Tree Lane."
(from: "Mary Poppins" by P.L.Travers, 1934)
... and this here is a "carpet bag" I made, it seems to be empty? Well, it isn't!