What to do with the thousands of magic cards I still have from dad?

Apparently bookmarks

One of the indie authors here made bookmarks from them and I may steal the idea from him (with his blessing)

The back, he’s added a QR code for his website

Also consider ebay for some?

Shanzilla : I've considered ebay or selling to shops, the problem is I have to inventory them if I do that. >.> sell to shops at least.

shops won't consider even looking if I can't hand them a printed list of what I have.

and dad used to sell them so we have a few thousand cards across boxes.

the cards in the house we have are old, like 3rd revised through Portal, so from the 90's old.

You could be sitting on a gold mine maybe

Goldude : I could be. A lot of them are commons but I don't even know anymore how commons are fairing.

We also have some foreign cards, some signed by the artist cards because we used to circle the sci fi cons they frequented.

and I found some of the giant promo cards Wizards used to have that I think I wanna frame at some point.

these:

regular card on top for size reference.