What kind do you have? When did your LO start noticing it, and does LO like it?

We currently don't... my MIL has this random superstition that a mobile above the crib will make a baby cross eyed. Oook...But MY mom wants to buy LO a mobile... battle of the grandmas, ha!

I kinda want to get one as well. I've noticed I can leave LO to hang out in the crib for a few mins as I prep his bottle, use the bathroom, etc, without him freaking out, so I think maybe he'd like something to look at!