Maps are a big part of gaming. A traditional old-school way to involve maps is to let the players sketch a map piece by piece as they explore an unknown region, basing their sketch on the GM's descriptions. But in cases where the characters would know the region well, you can simply give them a complete map. This allows them to picture the setting in detail and get into even more trouble faster than ever before.

Transcript

GM: Here's the map of your base. Let me check where you are when... I mean on a perfectly normal, typical day.
C-3PO: I'm in the command centre!
GM: <roll> Luke, you're on a tauntaun—
Luke: I'm on a tauntaun?
Han: It's a kind of tightrope.
GM: It's a snow-adapted riding beast. You're patrolling the perimeter, here.
Han: And me?
GM: <roll> You're patrolling over in this sector.
GM: Leia and R2 are with 3PO in the command centre, and Chewbacca is in the hangar working on the Millennium Falcon.
R2-D2: Wait a minute. You're starting the party split up?
Leia: He's using reverse psychology.