Over at Slacker Manager - they are talking about a toolkit for managers, theres some really good tips on things that could help you as a manager - my personal list of items here:

• Text Editor - I’ve never stepped outside Notepad, but I should test some alternatives.
• Excel - is a constant companion for me, I use it for project planning, list making, action tracking and all sorts. I do need to step up my Pivot Table knowledge.
• Datebook/Notebook/PDA - I use my Moleskine for journalling info and taking notes, my Blackberry (linked to Lotus Notes) has been my PDA….but I suspect that a move to MS Outlook maybe in the offing in my new job.
• Phone - They miss the addition of a good phone - I use a S700I from Sony Ericsson, which is a cool phone with a reasonable camera.
• Digital Camera - I use my camera at work a lot (Canon Ixus 700) mainly for taking pictures of flipcharts after meetings - this saves me a lot of time and effort in copying them into emails/notes.

What do you use that I may have forgotten?