I'm an ME. Within an arms length of where I am right now:
1. HP 12C and 15C calculators - no fancy graphing stuff for me
2. Browne and Sharpe 6 inch digital calipers - probably 20 years old, but still work fine.
3. No fewer than 4 computers - Mac Laptop, desktop and Raspberry Pi - color printer and fujitsu scansnap scanner
4. Tivo
5. Enco Master catalogue - 2011 version, Northern tool sale catalogue
6. Safety glasses - about 4 pairs.
67 Leatherman wave set with AAA LED light and bit kit
7. Zoom H4 Handy recorder
8. Sony Digital camcorder
9. Heavy duty Bostich stapler - circa 1983 - accidentally absconded from engineering school lab - 3 hole punch and tape dispenser.
10. Neosporin for my many busted knuckles
11. Make Magazine - about 4 issues.
12. Bosch 12V impactor with Milwaukee bit kit and 1/4 inch socket adapter plus Stanley 1/4 socket set
13. Fluke multimeter
14. About a dozen multitools, small knives etc
15. Silhouette Cameo vinyl cutter plus several rolls of vinyl and accessories
16. Small can of Wd40
17. 1 shot Lettering enamel - Bright Red
18. Superlube synthetic grease
19. Medical shears, two pairs of scissors
20. Super glue - satellite city + accelerator, epoxy stick, household goop and fiberfix epoxy tape, permatex ultra black
21. Small tool kit for fixing watches and cell phones
22. Canon digital camera
23. Stanley 4 way screwdriver, several tape measures, milwaukee fastback
24 Various flashlights
25. About 2 dozen notebooks, sketchbooks, engineer notebooks.
26. About 100 pens, pencils, sharpies, highlighters and other marking tools.
27. Various glasses, magnifying glass, etc.
28. About 5 projects I'm working on right now.
29. Easy button
30. about 5 books I'm reading
31. about 2000 pieces of paper - most of which will never get looked at again.
Of that list here are the ones that I think might be a good idea:
Digital caliper is a good idea, but honestly my $20 harbor freight model works just as good as the $250 Browne and Sharpe does.
A good Fluke multimeter is actually a very necessary long-term tool. They are durable, useful and you can get a nice one in a $200 budget - plus a kit of extra wires and probes.
I also like the idea of a 12V impact tool plus a 1/4 inch socket adapter plus a small socket set - I use these all the time for taking things apart and putting them back together. I have a Bosch here at my desk, but I also have an identical Milwaukee and also a Makita version at various places, all used about the same way - driving screws and taking things apart with 1/4 inch sockets.
Another tool, which I have in my truck is a zyklop 1/4 ratchet and bit set - I also use that all the time in conjunction with a 12v impact tool.
That leatherman wave set - with the bit drivers and small AA LED flashlight in a nylon belt pouch is an incredibly useful tool set. It's not as fast as power tools, but you can get a lot done with it. I found the whole set on clearance, but I think the original price was about $89.
Hope this is helpful