A friend just mentioned this, and I Googled it.
"40 ways to entertain your kids while lying down"
Okay, for some reason, I can't get the link to work - it keeps changing the url to include some strange nonsense stuff. Anyway, just Google "40 ways to entertain your kids while lying down", and it's on the 'babycentre.com' site.
Lots of good ideas in there! I think this is my favourite ...
This one is a winner – it's called "What's on my butt?" You lie face down on the couch and try to guess what object your kiddo has perched on your tush. "Is that a cement mixer on my butt?" Just getting to hear you say the word "butt" is the best thing that'll happen to your kid all day.