This puzzle is part of the Monthly Topic Challenge #14: Think inside the (very small) box!.
Can you solve the following clues, fit their answers into the grid below, and then determine what belongs in the 16th cell (obscured by the question mark)?
American slang term for the police
Broadway musical in which Ariana Grande made her debut
Chelsea F.C.'s most recent kit sponsor
Figure often seen tied in knots
It features two Elizabeths, for the time being
It's represented by a red flag with a white cross
More of these means something is finer
Nickname for the third group of astronauts selected by NASA
River in North Yorkshire
She got her name from a mark on her arm
Something many association football and ice hockey goalkeepers choose to wear
Song from Taylor Swift's second album
Taking the Browns to the Super Bowl is doing this?
This is often given up high
Three of these together is a bad sign