My 5 month old has just learnt to roll over - Fantastic, very proud of him - However, he used to be happy to lay on his play mat while I did a few bits here and there, now though, he rolls on his front and then gets in a temper as he can't roll back!
A book I have says leave him as it will strengthen his back/neck and he will learn to go back eventually, but I'm not keen as he bangs his head when he gives up!
Basically, has anyone any tips of things that I can buy that he will be happy to play in (I already have a bumbo) else my house will end up an even bigger pigsty than it is already (if thats possible!)