What baby items do you regret buying because it was very seldom/never used?

Hi, I bought playpen for my daughter and it was quite expensive and to top it all we had to keep track of it over and over again while it was being shipped to us. But when it actually came, my daughter hardly played in it. Her playing interest was that part of the home, where I used to be. And only those times when I went inside the playpen with her, she used to play for a while or used to clap outside its mock wall.