Briefcase
From Tardis Wiki, the free Doctor Who reference
A briefcase was a sort of movable container, which could be held closed with a flap. (TV: Planet of Giants)
Miss Delphox suggested that a customer at the Bank of Karabraxos had counterfeit currency in his briefcase. (TV: Time Heist)
Newt Scamander once captured Beast Boy in his briefcase in the Land of Ooo. (WC: New Adventures Await!)
Eddie Redmayne owned a briefcase. (TV: Looking for Pudsey)