It's great that Jacob has been sitting up on his own for the last few weeks! I usually surround him with 5 or 6 toys, leave him in the living room playing while I do some house work and he is very content. If his toys get out of reach, he is very good at balancing himself and reaching for them without tipping over! But my mistake this morning was leaving the toy basket next to him... I am guessing he didn't like the toys I picked out for him!