Can:
Mining Drill
Diamond Drill
Chainsaw
Nano Saber
Mining Laser
All Nano and Quantum armor
Composite Vest
Bat/Lappack
Can't
Insulation Cutter
Wrench
Electric Wrench
No idea how they will react to enchantments- And Al is planning, last I heard, to remove the ability to.
(Unbreaking 1 isn't crashing my game on my mining Drill- No idea if it's actually doing anything.)
The small amount of tests I did, didn't crash the server. Yay.
Can also combine The Drills/Saws to increase energy.