A sensory board or busy board is a fun, hands-on activity for babies and toddlers to help them touch, explore and learn about different objects all in one place. They have lots of developmental benefits too and are really easy to make at home with things you have to hand.
Have a go at making your own rainbow salt tray. Toddlers and pre-schoolers will have lots of fun watching the colours come through when they draw pictures, create patterns and write their name in the salt. It is cheap to set up, educational and you will already have the items at home.