Get some soft toys and place them just out of reach of the baby. You can use one or a lot and place them around the baby so they are encouraged to move in different directions.
This encourages development of back, tummy and neck muscles, muscles in the arms and legs. It also helps older babies learn how to push themselves up and hold their bodies to get ready for crawling.
Older babies may get frustrated during this if they can’t get the toys, if this is happening either move the toys closer for easier reach or sit them up.
Older babies that are nearly ready to crawl can be placed near a wall so they can use it to push themselves forward.