OS engines glow plug wrench (it's the best one because it grips the plug)
Hudy ultimate engine tools, for removing and installing bearings
Ladies tweezer of good quality, for removing/installing G-clips for the piston pin
hex bits set and Bestool Kanon 20LTDK torque screw driver
Set of digital calipers, Hobbyking sell a good digital caliper for almost nothing, needed to measure crank pin and con rod wear
Large number of stamps and envelopes, so you can send your P/S/R sets to RayAracing for resizing when you've run out of pinch

I think that covers it.