Sparks isn't sure what all of this medical equipment does. While most of it looks ancient to him, it looks light years beyond a lot of Crystallis's tech, so he'll take it all.

"Good thing we stumbled across this place. Considerin', um, y'know, recent circumstances."

They were going to need everything they could for fast healing now that magic didn't work as well as it used to.

That innocuous retcon bottle is getting shoved into a pocket when Jack is turned away. You can't say things like that to someone and expect them to not be curious.