Lux is a bit out of touch and would assume anything they had at home was important to them. Pretty much anything the player thinks would be relevant to their character and that they'd most likely have will probably be fine, as long as it's under the 5-item limit.

Weapons are just as allowed, but their abilities would be hampered. They won't cause harm to the Nox or, courtesy of Lux, other players or the force field around the city.

Anything likely not brought would be things that are larger than the city itself.