You will need:
Use Sensory Toys/Objects
Dangle objects for your baby to touch, eg hang toys over the cot or changing table, or place little one under the play gym. This encourages their reach.
Move objects in front of them such as a toy or rattle, or blow bubbles. Try objects that make a noise, move, are colourful or are black and white. This helps develop their eye movement and strength.
Sing Songs or lullabies and nursery rhymes
Any actions songs and nursery rhymes are fine. Show them the actions, eg clap their hands, clap their feet, bicycle their legs. Encourage them to look and play with their hands and feet.
Do the actions yourself and others such as wiggling fingers, pulling funny faces, clicking fingers and waving. This encourages body awareness.
With your baby on their back, hold each hand in yours and cross their hands in front of their body (so they're hugging themselves) and then uncross their hands. Repeat several times and do the same with their legs. This is important for developing coordination.