Memory/keepsakes?

I apologise in advance as I'm not sure which category this will be best in.. x

Looking for some photograph ideas or any help please.

My son is only 3 and yet I have a huge box full of memory things, a folder full of paintings/drawings a clarks shoe box full of things and a bag full of photographs etc and it's getting out of control but I couldn't face to throw anything away. Looking to make some kind of scrap book or something similar to narrow it down as im running out of spacr and can't imagine the amount of stuff I will have when he's 18 also pregnant again so that stuff will be doubled soon 😂 thanks x