I have an inclusions binder I bought from MeowCafe for all the large and oddly shaped inclusions. I like that they have a page finder where you put in the dimensions of the inclusions and it’ll recommend sleeves and binders that will fit
If they don't fit in my binder, I stick them on the wall. It's probably not very good for them but they look pretty and I can't be bothered to buy loads of different special binder pages for just one or two inclusions.
This is probably NOT what u should do, but I always either use them as binder deco or I just leave them in the albums they came in 🥹 with those specific inclusions tho, I used them as binder deco ^^
I keep what fits in a binder with photocards (like IDs) in a protector. The rest I keep in an album if they're part of its contents or in a separate box.