I highly recommend this case from Ztotop:
Ztotop Case for New iPad Mini 6 2021 (6th Generation), Premium PU Leather Folio Stand Smart Cover, Multi-Viewing Angles and Auto Wake & Sleep Function for iPad Mini 6th Gen 8.3 Inch - Brown
www.amazon.com
I had the same for my 12.9". Lasted me 4-5 years easily and is still in very good shape today. It basically allows me to:
- Have a loop more secure for the Apple Pencil
- Also allows not to constantly charge the Apple Pencil for no reason
- Has a pocket to put business cards or something very small
- Offers a good protection for the corners
- The handle on the inside allows you to hold the iPad with one hand while writing on it (which I couldn't do with my 12.9" due to its weight)
- Quality vs price ratio is very good
That's the winner