This script will spawn a treasure chest where you want one to appear that can store as many and any items you wish inside it.

Clarification
UID numbers should be in the format - UID 184467####4187468629; (# replace with random number)
ContainerContents[] : The number entered between the [] needs to be increased by one for each new item added.
The definition entered between the “” can be obtained from the decompiled names file.

NewThing Object;
Player 4;
UID 18446766684187468629
DefinitionType "OBJECT_CHEST_OPENABLE";
ScriptName NULL;
ScriptData "NULL";
ThingGamePersistent FALSE;
ThingLevelPersistent FALSE;
StartCTCPhysicsStandard;
PositionX 47.659912;
PositionY 33.154297;
PositionZ 55.0;
RHSetForwardX -0.743122;
RHSetForwardY 0.669122;
RHSetForwardZ 0.0;
RHSetUpX -0.000517;
RHSetUpY -0.000574;
RHSetUpZ 0.999994;
EndCTCPhysicsStandard;
StartCTCTargeted;
Targetable TRUE;
EndCTCTargeted;
StartCTCEditor;
EndCTCEditor;
StartCTCChest;
ContainerContents[0] "OBJECT_SWORD_OF_AEONS";
ChestOpen FALSE;
EndCTCChest;
Health 1.0;
EndThing;