If you could set yourself up so that you were able to make a copy of each slide in 1 minute, it would take roughly 133 hours just to get those 8,000 slides into the computer.

How to convert Google Slides to a PowerPoint presentation in 4 easy steps How to copy or duplicate a PowerPoint slide and put it anywhere in your slideshow ...

Even if one uses a slide copy service or a digital camera add-on, it is great to have a scanner around the house for grabbing paper snapshots, copying magazine art and such.