My daughter has been with the same childminder for 17 months (since she was 8 months old).
I have recently returned to work after having my second child (son) who is 8 months old and he has been at the same childminders for a couple of weeks.
My son is a very light sleeper and quite a sensitive soul. I realised when he was younger that a) he really, really needs his sleep and b) sleeps much better if the room is very dark and there is white noise playing in the background.
My childminder has a very large house and a dedicated room for the children to sleep in (not used for anything else). I explained about the darkness and the white noise and I said I could provide a travel black out blind (a baa baa black out blind that sticks to the window with suckers so is temporary) and an ipod (with docking station) for the white noise.
She made a non-commital "we'll see" and then basically won't use either.
I can understand the black out blind to some extent as she would have to stick it up and take it down unless she wanted to leave it there permanently but the white noise is just a case of plugging it in and pressing a button.
My son, although he does sleep without these things, doesn't sleep for as long (1 to 1.5 hours rather than 2-3 hours at home) and as a result is coming home exhausted and hysterically tired.
So tell me honestly, would other childminders think this is an unreasonable request.
The ironic thing is that I introduced the white noise partly so that my son would have something that he could take to the childminders when he started to ease the transition. If I'd known she wouldn't use it, I'd wouldn't have bothered.