Deutsch	English
ein Buch lesen	to read a book
Musik hören	to listen to music
einen Film sehen / schauen	to watch a film
ins Kino gehen	to go to the cinema
Fußball spielen	to play football
Gitarre spielen	to play the guitar
kochen / backen	to cook / to bake
wandern	to hike, to go walking
Rad fahren	to cycle
Freunde treffen	to meet friends

spielen covers both sports and instruments — and an instrument takes no article: Gitarre spielen.

For watching a film, sehen works everywhere; schauen is especially common in the south and in Austria, and in the north you'll often hear the casual gucken.

The key question: Was machst du gern in deiner Freizeit? — What do you like doing in your free time?