One interesting example I've read was in Eric Schmidt book - you really wanna think how you pick their name - whether you want it to be unique or drown among other John Smiths in Google search.
Other cool idea was my partner's - instead buying a baby cam (which we would use rarely) we just Facetime each other and leave one phone on mute.
p.s. our bubs is 5mo old atm.
Roku won't help. Game systems let it in. Maybe you can do something with net nanny or something like that but do it now before it's too late.
Don't get me wrong there are some decent kids channels on there. But, there's no easy way to partially lock it down. As far as I can tell the options are sit and watch kids TV all day or get rid of it.