I confess I’m a little bit obsessed with these stacking sensory pebbles. Spotted over at emporium of learning and wonder TickiT, they come in set of seven, natural and rainbow wooden, or silver, gold or colour burst stainless steel. The seven buttons range in size from 5 to 14cm and the stainless steel ones boast shiny, reflective surfaces, perfect for learning about light or just creating funny faces. The steel buttons make interesting sounds when knocked together or hit with another item, while both wood and steel are incredibly tactile and make aesthetically pleasing wobbly towers. Prices start from £32.99 a set – they might just be my favourite new toy.