Kaden make unique wooden building blocks with built-in tracks for marbles and balls. This German brand was created by a father-and-son team whose shared passion for wood and design inspired them to found their own specialised building system for children. The built-in ball tracks give these blocks a thrilling extra dimension, challenging young constructors not only to balance and build but to find routes through their structures. Playing with Kaden, children are engaged in the essentials of engineering and maths, solving problems and testing hypotheses. They are also inspired to create, envisioning their own structures and persevering until eventually they make it work. Fine-motor, spatial awareness, and hand-eye coordination are also engaged, making Kaden just about one of the best open-ended toys we’ve come across.