How to Preserve Physical Photos

Related question: what's the best way to digitize a collection of physical photos for personal use?

I ran into this problem recently for a family reunion where we wanted a slideshow of photos that were decades old. The best solution was to manually scan them using Google Photoscan which involves taking a 5 pictures of each photo with a phone and letting the app remove reflection, perform skew correction, crop, etc. This resulted in better photos than just using the phone's default camera software, but it still took 10+ seconds for each photo.

Does anyone have an recommendation for at home photoscanners that would allow me to drop a stack of photos into it and have it automatically scan them? I found various devices on Amazon that target this use case but they all have drawbacks like low resolution or excessive manual work. Has anyone done this with their family's old photos?

I also digitized over 200+ photos of the in-laws from the typical physical albums using Google Photoscan (I think about 10 years ago). I did it just for fun and to see what the workflow would be for digitizing the photos.

The ideal flow would be having a good-quality flatbed scanner and hiring someone to scan them. (I'm in India and the cost is comfortably affordable to set up such a process.)

Recently, when colorizing and animating photos was new and fun, I animated pictures for a few of their great-grandparents. It made quite a few grown-ups cry with joy.

> colorizing and animating photos

Could you share the tool you used for this please? Thanks!