The %3F%3F%3F Box, through Appraisal, can result in a multitude of various items, such as crafting ingredients and automaton attachments. This list is very much incomplete. The ??? Box containing an Automaton part is not a 100% drop from this BC and the appraisal rate on the Tranquilizer and Economizer seems very low. However, the ??? Box obtained from a surprise attack on the captain (which has a chance to be ??? Gloves) can also be an automaton part, resulting in a possible 2x automaton parts.