The Sketchboard Pro for iPads provides a stand which integrates the iPad into the surface. I use it occasionally for when I paint on my iPad.
Site: https://sketchboardpro.com/
Some notes
It is a little expensive for what it is, but I do enjoy it.
Comes in different sizes to fit your iPad
Still leaves space for charging the Apple Pencil 2 and a USB-C cable connection
iPad relatively secure in it in normal use. But I would not suggest holding it upside down to test whether the iPad will fall out.
The extra bezel area is nice. At first I thought it was going to be too big. But it's very comfortable.
Reviews
Ergojosh - SKETCHBOARD PRO - COMPLETE REVIEW Jan 16, 2021
Product page - https://astropad.com/darkboard/
Product page: https://www.thesketchslate.com/