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
Recent Toys Brainstring 'R' - Walmart.com
Comprar BRAINSTRING R de RECENTOYS- Kidylusion
Brainstring R Puzzle Node - Stacking Blocks - AliExpress