Wow. I thought I saved things!
You have to ask yourself....what are you really going to do with these items???
I kept a preemie diaper and the hat they each wore home. No bottles, binky's, tylenol bottles, etc. I enough stuff to take care of. If you have more children, will you do the same? How will that add up?
Do you plan to give it to him? I'm going to go out a limb and say he won't want it.
I scrapbook pictures, certificates, hair, etc. I put the 3D stuff in a cute box and try to keep it very minimal. I honestly do not buy gimicky items or decor just so I don't have to fight myself if I'm going to save it or not.
I also keep a separate 3 ring binder for health records. I put all the hand-outs that has developmental milestones from the dr. office and height and weight in plastic sleeves. I write extra notes next to the milestones. I wrote my daughter's words next to the part it says, "says 8 words or more."
I do keep dresses/outfits that we had the girls' pictures in. They can decide if they want to keep them for their future daughters or not. I will keep a few toys...and that is it.
I also come from a place where my mom died at a young age (56) and I had to go through her things. I realized that people keep different things for different reasons. I don't know why mom kept some stuff, but I couldnt' keep it just because it was important to her. Grandma died a year later and I had to go through her stuff. I had to let go and only keep things that were important to M.. Just something to think about. :)