OK I know this is going to come across as desperately PSB but we didn't really expose DS to children's TV, or adult TV apart from things like the dressage (timing of his birth in 2012!) which was slightly luck more than judgement because he never sat still in front of the TV for more than about 2 minutes until he was about 22months, ill, and I discovered he liked Mr Tumble.
But of course now he likes TV and we let him watch an hour or so at a time, usually in the afternoon.
DD is 5 months and has started staring at the screen when I watch TV when I feed her. If we're watching with DS she usually falls asleep or smiles at me on my lap, but unless she's as fidgety as DS she'll start staring at his programmes, and we do take seriously the research on ADHD and early TV watching, as there is some evidence of it in their birth family.
So far I've come up with:
DS watches during DD nap (except they both nap at the same time now, and I tend to use it while feeding DD to keep him out of my hair).
Take DD into kitchen to feed/play with radio on instead (fine while she's not very mobile).
Put on radio instead of TV while feeding/while I need peace and quiet (but it's not as good at keeping DS out of trouble)
Ideas anyone?