I had these as a kid, although I don’t remember using the weird “drink along with you” feature. My biggest memory of these was brining the Pebbles with me to kindergarton, the same day every other kid brought a G.I. Joe, somehow that didn’t haunt me until high school…
AKA Brian Heiler author of "Rack Toys: Cheap, Crazed Playthings" and co-editor of "Toy-Ventures Magazine". Co-Host of the "Pod Stallions" podcast. Host of the Brick Mantooth Youtube channel, painter, designer, writer, mental health advocate, toy collector, Mego, and Mego Knock-Off enthusiast. I have large feet, ADHD and I live in Canada. Talk toys, not others. 
@brickmantooth
Official Tura Satana Action Figure Now Available
PlaidStallions Action Figure Archive
5 Awesome Things on eBay this week
Toy-Ventures Issue 12- Stretch Monster
Knock-Off Book
My three year old girl would love that.
The Flintstones. They're really one of my favorite cartoons. I love the Fred and his family.