Mom's Box, Crystal Ball, Coupon, The Book of Belial, maybe a few others just need a comment that Void doesn't get the passive effects.

Spin to Win into Void: Adds one orbital for that room.

Severe warning labels should be added for the Void interaction with Magic Skin and Book of Virtues. Specifically, after using it, Magic Skin will replace some future items because it's not being held, even if it's inside Void. BOV is technically a passive item that changes your empty item slot behavior, if void eats it you just get the stat bonus, which is not fun.