Oh, I have plenty of gadgets! I have a ruler with a big circle thingie tacked onto it. I forget what it's called but it's used for charting flights. I got it when I took beginning aviation.
I also have a little... um, it's a very old drafting tool. It has a little dial on it, like the face of a pocketwatch, and then a teeny metal roller on the bottom. You roll it across your plan and then you can use that to convert the distance on the plan to the real-world distance. IE, 4 centimeters = 1 meter, or whatever. It was my grandpa's.
My dad has a tool which I will enjoy inheriting someday (not that I want him to die). It's a brass sextant that he used when we lived on a sailboat. Today if you buy one they're usually just aluminum or plastic. So this one's very fancy.
Those are my more interesting items.