As for the keyboard, I am going to use just the keyboard as I want the keyboard only. Mice break easily (but not that easily), hence it is good to have an extra one as a backup.
I purchased these two so as to stay away from the laptop screen to avoid any strain and other problems. Minimum of 51 and roughly 101 cm of distance is expected between the screen and eyes.
And I am able to see the change in eye strain! Much more comfortable now.
I have also got a study table, as is shown below. But mine is local made and it has iron material instead of wood, for the stands.Laptop on one vertical end and the keyboard and mouse on the other vertical end.