What does actor Joseph Gordon-Levitt take with him everywhere he goes? To find out, solve the crossword then read down the shaded squares to find the three-word prize answer.
ACROSS
Dark blue dye (6) _ Ronaldo, Portuguese footballer (9) Den (4) _ Beckham, fashion designer and singer (8) Male monarchs (5) Harm (6) Star sign (7) Rules of the road (7,4) Baked loaf (5) Actor who played the title role in (3,6) First Greek letter (5) Duplicating (7) Restricted (7) Select (6) Turning (8) Untroubled (8) Mistakes (6) Alters (7) Pete _, former tennis player (7) Parent's brother (5) Vitally important (9) Italian city (5) Home of the UK parliament (11) Very wicked person (7) George _, author of (6) City in Cornwall (5) Short humorous verse (8) Michael _, actor (4) Highly valued (9) Use one's ears (6)