I think this was originally an American thing, but I'm not sure. All I know is that I never heard of this in Norway!
Here in Ireland, there is a store called 'Build a Bear' and it's like you go a little circle in the store picking different things for your bear. Like, first you choose a 'skin', what it's going to look like and then you decide if it's going to be floppy, kind of, or full. Like, they fill it in front of you and they give you a little heart and tell you to make a wish, then they put it into the bear. You can also choose to have sounds in it, like, if you squeeze it's paw.
You can choose between lots of clothes and stuff, but it costs loads extra so we didn't do that. Then you go on a little computer and chooses it's name and things like that for it's passport and birth certificate.
It's such a fun experience! This is one of the many, many things I found in the storage unit that's pretty cool!