We had a rare meal out a couple of nights ago with one son, DiL and the two teenage DGC, and at one point, the DGC started to talk about their memories from when I used to care for them at my house for several days a week up until they were about six years old.
I was delighted to discover how many things they remembered so fondly from those times - especially as it was always very clear back at the time that they would much rather be at home with their parents if it had been possible! Based on those memories, I will now keep anything related to them, so that the DGC can eventually choose whether or not they would like them when I die.
I am being very selective with photos, and have got rid of a huge number recently, but have sorted and kept any that I think might be of interest to the family one day. This includes family photos going back to my great grandparents on two lines, most of which I have only discovered in very recent years. I have written who the subjects are on the back.
Having done a huge amount of family history over the past two years, and solved a big mystery there too, I have loads of info that I would like to think would interest someone in the family after I am gone, and I shall certainly keep it all so that they have a choice.
I do keep intending to actually draw out (the old fashioned way) a big tree that at least shows the direct ancestors as far back as i have reliably been able to go, and make additional info on each generation available for any of the family who are interested.
Beyond that, I don't think I have anything much worth keeping for them.