My mother passed away from lung cancer about 2 years ago.

I wish I had more videos and audio recordings of her. I wish I had handwritten letters from her. I wish I had audio/video of stories and family history only she would know. Above all, I don’t think I would have found any of the above weird or morbid, and I doubt your children (or spouse?) will either. I know my siblings feel the same as I do. You should feel safe in knowing that they will deeply appreciate any artifacts you leave behind for them to think about when they miss you.

I’m sorry for what you’re going through, and I wish you and your family the best.