Preset Inventory

Add an inventoryobject to the object

<inventoryobject Blueprint="Lives1"></inventoryobject>

Random Inventory

The best modern way is to add a tag:

<tag Name="InventoryPopulationTable" Value="MyNewSnapjawPopulationTableWhatever"></tag>

...and add the matching population table via a populationtables.xml file in your mod.

Legacy Methods

Legacy methods that we've most deprecated in favor of population tables:

Builder classes directly on the inventory part: <part Name="Inventory" Builder="InventoryChestJunk3or4"></part>