Fisher-Price Giant Rock-a-Stack, 14-Inch Tall stacking toy, GJW15 & Baby's First Blocks, Set of 10 Blocks for Classic Stacking and Sorting Play for Baby & Infants, Ages 6 Months+, FFC84 : Amazon.co.uk:
John Lewis Stacker and Roller Set
Colour Stacker | Wooden Stacking Toy
Woodlets Rainbow Stacker Toy | Early Learning Centre
Jellystone Rainbow Stacker & Teether Toy - Pastel | The Kid Collective
Wooden Stacking Ring Toy - Plan Toys - Tiny Town
Playkidiz Musical Bear Ring Stacker, Stacking Rings Toy with Lights and Sounds for Toddlers - Sensory and Educational Toy for Girls and Boys, Great Birthday Gift : Amazon.co.uk: Toys & Games