One thing I've always wished for but never had.
Quiet time: One hour every day where no one can schedule meetings or call their co-workers. One hour of zero interruptions. Most tech people I know work after hours or from home, just to get this.
I'll spend 30mins in the morning carefully writing an email to detail the current status of my project. Then I'll get four or five 5-15min drivebys interspersed throughout the day to ask about updates, estimates, timelines, changes, or other projects. Part of the frustration is not even knowing if I can start a complicated task before someone comes in to derail it.