I put cbeebies on and DS watches it in the living room. He has access to lots of toys and books at the same time, sometimes he plays sometimes he zombies in front of the TV. On a very rare occasion he comes to the stair gate and calls for me (living room door has a safety thingy so it doesn't shut and I keep the bathroom door open so I can just about hear him).
I've had the similar dilemma in the past about how to shower. I can't do it when he is asleep because if he wakes there's no one else to go to him and there's been teething for ever so always a chance of wake ups.
As soon as he could get across the room showers became a problem with him in the room. He would scream blue murder the whole way through my shower and try to get in (just soaking himself and the room with the door open), that's when I started using the TV, initially in the play pen but not any more, he doesn't get up to much mischief, it's like he knows not to do anything risky.
Funny enough a couple of times this week he wanted to come up with me when I went for a shower so I let him (he seems to have outgrown the screaming to get in). One day it was fine, he played with his duplo that he hadn't seen in a while but this morning he totally trashed the bathroom. Dragged the rug across the room, emptied out the duplo, pulled all the clean towels out of the baskets, upturned the baskets...everything he could get into he did. The only things he didn't touch were the toilet brush and the bin as he has learned not to touch those. And standing in my trashed bathroom I thought of YOU! I thought Ali doesn't have this problem, she has a bath with her LOs! ha!