Becoming a big boy

He's been wanting to sit up but getting frustrated as he slips down when propped up so I did a bit of research and discovered these little support seats but they rather expensive so eBay and preloved to the rescue.

His face lit up as soon as we put him in it, he was fascinated with looking at Ferd from a different perspective and then he started grabbing toys. He got upset when it was time to come out and just would not settle on his back to play so he had another little session.