Man is a generalist. No harm in that: he/she is remarkably adept at adapting and to enhance this process has created a batch of tools which allows him/her to perform to the highest levels.
When push comes to shove, what are the essential Tools of Excellence?
16: The Propelling Pencil
All the benefits of the pencil: to jot, to sketch, to list, to mark, to ponder. But always sharp and always of the graphite density you prefer. Almost unbreakable, forever ready to go and as happy in a hiker's back-pack rear pocket as a desk in call-centre cubicle. Absolutely, definitely a tool of excellence.
The Excellence Kit-Bag so far:
7: Trail-Mix
10: The Compass
11: The Wall Planner
12: Two Short, Intersecting Lines.
15: The Flight Deck
Bonus: How To be Brilliant.