Contrary to what many woodworking magazines and forums might lead you to believe -
Actually very little is
required.
And --
no -- it does not take a lot of money
As evidence I invite you to visit most any museum or antique store and observe some EXCELLENT examples of the very items you mentioned built with little more than a chisel, a draw knife, a plane, a hand saw and a brace and bit.
Beyond that you get into the realm of things that are
desired and
preferred.
There are all kinds of things that make various jobs go easier, faster etc.
And when you get into that realm you can spend a FORTUNE.
Mind you - there are a
lot of things I desire and prefer
just like anyone else.
It sounds like you have a pretty good start.
The only thing I would add would be a router -- and not because that is the topic of this site but because it does make it easier to round over corners etc.
Beyond that -- as has already been mentioned -- the most important 'tool' in a woodshop -- is the craftsman. To me it is much more valuable to spend time and energy learning skills than money buying bells and whistles.