Stuff.
If your kids are thinking about engineering, you can head over to their new building and they have their lab area down in the basement and you can see all the stuff they're working on, along with the prototyping equipment. It's pretty cool if they're into that.
Also, in case you didn't know, the Bean Museum isn't about legumes, there's tons of awesomely stage taxidermy in there, including a ligar!