I really like my owala water bottle. I don't think there's any hidey-mouldy places, and it's water-tight. I also appreciate the dual straw&chug mouthpiece. Pretty clever imo.
Can confirm about the Caspar Babypants bangers, and would also like to add Secret Agent 23 Skidoo for totally amazing kidhop, his daughter even raps with him.
Our library offers access to Kanopy, which is a streaming service!!