What is your favorite, most used, oldest, most unique, most frustrating and/or most frequently used tool?
Let's keep it to a single image per post. Post as often, with a brief comment, as you wish.
How many different ones can we amass?
Here's my first of what I image will be at least 1/2 dozen contributions.
My little point and shoot Canon camera has been invaluable. I use it to record stuff before I take it apart so's I have a chance at correct re-assembly. It also allows me to share my passion with, and solicite information from, others i.e. this site