Our tv is on most of the time aswell. I'm guilty of that too.
We watch playschool and the other cartoons together. He likes to sing along to the cartoons little songs, and so I have to do it with him.

He makes up games to play. We do pretending games most days. The weather has been crappy so we've been doing colouring in and drawing alot lately, where as we're usually outside alot doing whatever he feels like while I hang the washing out, etc.

Today he's playing alot by himself. Doing jigsaws. Writing numbers and other things like that. We'll prob walk to the park later or something. He usually likes to help with the clothes folding and making dinner, setting the table, etc.
I just go with the flow most of the time.

Thanks for the thread, Mel! it's giving me more ideas too.