I was at Walgreens the other day and found sports bottles for $.99. They also had items inside such as crayons, pill sorter, advil and a few other items I can't remember. I don't know if they are at every Walgreens but thought this was definitely a great item. The only problem was that they were red in color. If I had not gotten my mugs already I would have definitely bought these. Just wanted to post and maybe help someone out.