“Really? I don't think you've ever given me a present before. Oh, it's a sonic screwdriver! How lovely!”

The Twelfth Doctor gave River Song her own sonic screwdriver at the beginning of her final date with him at the Singing Towers of Darillium knowing that she would need it when she ultimately met their Tenth incarnation in the Library.

This sonic screwdriver prop designed by Peter McKinstry and built by Nick Robatto was supposed to have the appearance of a modified, future iteration of the Tenth Doctor’s sonic and thus shares many similar details in shape, materials, and finish, while adding a “neural relay”, trigger, and patina. While this prop has working lights, the "neural relay port" is static and non-removable.