Spinoff of the I forgot to pick up my daughter post.
I've never forgotten DD in the car or at any location, but I can no longer count how many times I've forgotten to bring an extra diaper. The worst thing so far was when we went to DH's hometown about five hours away and forgot all of DD's clothes! They were in the dryer at home, and DH and I both forgot about them. DD and I got to go on a mini shopping spree at Walmart lol.
What have you forgotten thanks to mommy brain?