I have Christmas lists from the kids. My favorite is my son jerry's- he was 5. Dear Santa: I try to be good. He still has the same problem at 24. He talks a lot (A LOT).
I have some papers that I let my oldest sew- I gave her needle and thread and she "sewed" on construction paper.
Youngest- all kinds of papers from school. Other daughter- same.
I have my boys tails (remember when tails were in?). I have them in ziploc bags. Cute little curls.
I have all my kid's braclets from the hospital from when I brought them home. And the outfit they wore (they are now- 31, 26, 24 and 19).
weird stuff, but it means the world to me.