Can you combine 2 different items in the same place?
For Example :
__________________________________________________ _____________
1. Valkyrie Hair + Deal With It ( Glasses )
2. Valkyrie Hair + Gangster Bandana
3. Swag Cap + Deal With It ( Glasses )
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Same, on the head, but different head position?

I don't know if it still works: activate an item, put the other one in a deactivated set, activate the set.

You can't combine 3D items that are attached to same bodypart.
WeppetKo: that method never applied to 3D items, only for hairs.