You have broken rule no.1 Firstly, I love your video series on Youtube. Great clean work on MK4 mate! Absolute joy watching you work.

I have absolutely everything I need for my 3'x2' build. Yes it cost money!

These parts are just for something fun and perhaps useful. I'm not buying anymore for it.
Interestingly, I've already put together a build in sketchup using only these parts and a short chunk of aluminium extrusion (120x80mm heavy duty). It sort of looks more like a milling machine than a cnc but still. For lead screws I use regular M8 threaded rod and some acetal as lead nuts. I actually build the xy part of it and it was super sturdy and no backlash that I could see.

I just wanted to see what everyone else would make with these parts.