DIY Gunsmith Toolkit

I am trying to put together a small home toolkit for any DIY gunsmithing needs. There is scant little information out there to put together one.
Has anyone done this before?

I want to have my tools and small gun parts that I might need in place for easy availability.

My current Proposed List:
Tools:
Toolbox - TBD
Steel Punches (Grace)
Brass Hammer (Grace) - 8oz
HexKey Kits (Bondhus)
Needle nose pliers (Knipex)
Screwdriver set
Screwdriver set (jewelers size)
Small Ballistol
Rags
rubber mat
Small LED light (Streamlight Pen)

Gun Parts:
HK Roll Pins (3x14mm) - both types x5ea
HK Backstrap Roll Pin (3 x 20mm) x5
HK45 barrel O-ring
870 Receiver Pins
870 mag follower (factory)
870 mag tube nut
870 rifle sights (Old set)
Magazine followers for several handguns
Mag springs

Possible part additions: