It would be cool if someone could 3d print 3d printers like im talking about printing not only external frames but the cords and electronics and all that

im a teen who likes to make L3G0 army dioramas. i currently equipped my army with M1917s, honey badgers, 81mm mortars, and much more. what should i add next? (im thinking maybe boringthings product or tacticalbricks product. they are both makerworld creators who make great products for L3G0)