Open the console and type
/box spawn box_1
/box spawn box_2
/box spawn box_3
/box spawn box_4
/box spawn box_5
/box spawn box_6
/box spawn box_7
/box spawn box_8
/box spawn box_9
/box spawn box_10
/box spawn box_11
/box spawn box_12
/box spawn box_13
/box spawn box_14
/box spawn box_15
There are 15 different types of Object that can be spawned
You must be Admin or playing a Solo game
simple..
Serenity