Instruct: Classify Amazon reviews into positive or negative sentiment
Query: ABC stamps

I purchased these ABC stamps for my 18 month old and a friend's 18 month old to play with ...unfortunately, neither of them were really that into it! We had thought to try some slightly structured educational play. I know that given a year or so, maybe even just a few more months, these will be a big hit.I have only two critiques of these stamps: one, they are smaller than I expected, and two, they are difficult to get out of the case (and the case has no lid). Neither of these would prevent me from buying these in the future. I love Melissa & Doug products.