The tornado hat may look laughable to wear, but it's anything but funny when you're facing the tornado caused by such a hat. If using it, beware, do not spin for too long...
A small brass bell…with a deadly power.
The PCs find a strange helmet, when donned it will take control of that PC and speak and act trough him/her. It explains that it is benevolent and needs their help in a quest and that it will stop possessing the PC when the task is done. Great if a player is gone for a number of sessions.