Zel's box contains:
-a pile of tan fabric that he can assemble into an outfit that makes him think he looks inconspicuous
-his sword, which just barely fits along the diagonal
-a sack with some coins, which are probably useless here
-chimera grooming kit, including wire clippers and a metal brush
-a book with its pages half-filled with his notes on various things
-stationery kit, including a pot of ink and some well-worn quills