Unmentioned, but non-negotiable is eye and hearing protection — assume you already have that in your shop?
Metrology equipment? Do you have a good/decent pair of calipers? If you can keep them in batteries, a Harbor Freight pair will do. If you’re doing metalwork you might want a pair of micrometers — I find a centering rule invaluable when setting up cuts since I often use center for origin
Additional assembly tools: Flush cut pliers (or scissors — fingernail clippers can also be used to cut a short zip tie with a nicely rounded edge), Needle nose pliers, Tape measure or ruler, Level, Pencil; possibly also Easy-peel masking tape, such as blue painter’s tape (nothing that leaves a residue behind), Adjustable wrench, Flashlight
If you’re doing small-scale work, then 1/8" endmills may make a good fit, and are a bit less expensive (but more easily broken) — conversely, for larger work you may want to consider 8mm (5/16" tooling) which is far more rigid, albeit hard to move fast enough to balance chipload and rigidity.
pendant option of some sort:
- a game controller can be used: Using a Game Controller with CM513 and later
- the standard keyboard shortcuts allow a numeric keypad to be used as a pendantby remapping one can use a gamepad: A different sort of pendant
- Dedicated units are also available and one person used a Stream Deck: Carbide Motion DRO Pendant