Ask HN: Chairs for use w/ standing desks?

Yes, that is a bit ironic, but it’s a serious question:

I am now happy to have a standing desk at work. It is not the expensive kind that rapidly changes height, and I do get tired of standing all day. Thus, I’d really like to get a “tall chair” to use sometimes in front of my standing setup.

I’m hoping for recommendations for such a chair.

I understand it’s lovely (and ergonomic) to have something solid to rest one’s feet upon while sitting, so my ideal setup would involve a chair with a nice, adjustable footrest, or perhaps another object suitable as a footrest.

Thank you in advance for your thoughts and suggestions!