How do you upcycle a sandbox into a new purpose?

I have a Step 2 Naturally Playful Sandbox rectangular light brown block looking sandbox with lid in excellent condition, no longer have little children or grandchildren so little to use it. It still have playsand also in great condition as it was all stored indoors. I would like ideas for new uses of the sandbox, lid and sand? Greatly appreciate suggestions! tried to upload photo but I am not real savvy and it didn't work.

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