So far:
The easy ones - Pressure tester, including plates to block off the ports and spacers for bolts, chainsaw wrench, chain and grinding wheel radius gage, allen T handles, spark tester, piston stop.
Ones that took me a minute - plastic ring compressers in several sizes, and a plastic plate with a slot in it that I'm guessing is to slide under the piston and around the rod to support the piston when changing rings and starting the jug on the piston.
Ones I'm not sure about
I think one is a seal driver. It's about 4" long, starts out at 2" diameter, and tapers at a 45 back to 1" diameter, and has a deep 5/8" hole in the big end.
Another part is about 2" long, and 1/2" diameter. One end has a hex machined on the outside for about 1/2 the length. The other end has a very shallow M8 x 1 thread in it.
Yet another part is 1-1/2" long and 1" in dia. It is hollowed out from one end to create a thin walled cup. The other end has about a 6mm hex hole that opens to the inside of the cup. 1/2 the height of the cup is machined so that all that's left of the wall are two thin legs on opposing sides. Looks like something you would use to loosen a spanner nut.
The last piece is a thin walled oval aluminum tube open on both ends. It is about 2" long, and the oval is about 3/4" x 1". It's actually more of a rectangular tube with a full radius on the short side of the rectangle. I wondered if it might be a spacer to assist in plugging a port for leak testing, but I'm not sure.
When I get a chance, I'll post a photo or two