What are some things you just don't "see"?

I'll notice lots of details others don't, but at the same time there are certain things I just don't "see" unless someone points it out to me or I have some kind of procedure to check it. Here are some of them:

-glasses of water around the house (I keep grabbing new ones and then they end up everywhere) -dirty fridge, dirty microwave -when my boyfriend gets a new haircut (I forget what the previous haircut looked like once he cuts it, I notice only after touching his hair and feel the different texture) -looking for my phone while it's in my hand

Interested to hear other people's "things they don't see".....