playbox

plural playboxes

1. A box for storing playthings; a toybox.

   These paper and print designs may be used to decorate nursery playboxes[…]

   1947, Viola Hening, Fun with scraps, page 126

   2 more examples

   […] she brought down in the towel-covered clothes-basket, on the wheel-barrow, […] a playbox with a secret drawer […]

   1915, Rudyard Kipling, Mary Postgate

   That had all happened a year ago, and now all four of them were sitting on a seat at a railway station with trunks and playboxes piled up round them. They were, in fact, on their way back to school.

   1951, C. S. Lewis, Prince Caspian: The Return to Narnia