Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great Concept

I like the idea of this product, but I think it was built very poorly. The plastic that holds it together is flimsy and sad. I'm afraid I may one day break it by simply opening the product. My spindle of thread also fall right out of it as soon as I open it.I someone invents a better put together product. Get research & design at this fast!