I saw this idea and had to try it with Norah. I already had contact paper lying around so I just taped some on our coffee table with the sticky side facing up and let her stick toys on it. It didn't entertain her nearly as much as I thought it would, but I left it on there in hopes that she can entertain herself with it while I feed Lucy.
This activity has been fun. I pulled out our colander and some pipe cleaners for her to stick through the holes. She loves activities like this so, again, I've just kept it out and lying around the kitchen floor.
And of course, we've been watching some Barney. I probably shouldn't admit to how much we've been watching, but it keeps her entertained since they sing a lot of songs.
Overall Norah has done really well with Lucy. She will ask to hold her every once in a while and give her kisses goodnight. Now we just need to figure out how to keep her out of the baby sleeper...