What can pilots use in the cockpit?
The cockpit is meant to remain as sterile as possible, meaning that pilots may not bring many, if any, personal belongings. This includes coffee mugs, books, and their own headsets. They may bring their own cap or a pillow for their back, but that's about it.
How do pilots communicate with the control center?
Pilots once communicated with the control room through speech alone, but thanks to modern technology, pilots can contact them through text, if preferred. This eliminates the possibility of miscommunications due to background noise or mumbling.