What is this?

What is this?

White's side of the board is at the bottom of the picture.
The game has been played legally, if eccentrically.
A chess piece (king, queen, rook, bishop, knight or pawn, black or white) has just been accidentally knocked off the board.
What piece was it?
Black: King, 7 pawns, bishop + possibly another piece
White: King, 7 pawns + possibly another piece

White's side of the board is at the bottom of the picture.
White to play and mate in one.

A hat rack.

A cat called Eta.

Fairy Liquid and Center Parcs mugs.

Faces and hair.

A duck.

My glasses.