Brainstring R Brainteaser Puzzle : Recent Toys USA: Amazon.com.mx: Juguetes y Juegos
Brainstring Advanced Brainteaser Puzzle – 3D Block Puzzle
Brain on a String: And Other Ways to Stay Organized When Your Mind Isn't: PJ Long: 9780966739312: Amazon.com: Books
I have spent a bunch of time today looking for this discontinued Brainstring R puzzle. Wondering if there might be sites selling a used one? Tried EBay, Etsy, Amazon. Posting here to see if anyone has ideas? TIA!!! : r/wherecanibuythis
This puzzle will tie a knot in your brain! - The Brain String - YouTube