Not sure if this is the true spirit of this thing but
1] 6" half round file. Small, easy to carry. Use flat side to smooth straight edges, square conduit ends, etc. Use round side to de-burr inside of conduit. Use edge [~30º] to clean up mangled threads.
2] Vice Grip 12-LC. A very useful, large form of ViceGrips. Originally bought to stabilize one side of a compression coupling while tightening the other with GripLock or Knippex. Then discovered it to be the solution to the prohibition of vices on job sites. First I clamped it on the rail of a scissors lift to keep the conduit being cut from sliding all over the place and then realized that it was perfect for clamping said pipe to the railing and no problems since. Really good for holding small parts to do other wise impossible or unsafe work. Highly recommended. About ~$20 @ HD and elsewhere but not Lowe's.
3] 1/2" step drill from Harbor Freight, that mecca of tool fiends, with a 1/4" hex shank. This snaps into my Panasonic or other quick change, speedLock set-up.
~Peter
