When I first read the title of this thread, I thought you might be referring to a "toy box" of quilting gadgets that the quilters can try before they buy...which I think would be an awesome idea! :)
I have not noticed a play area for kids in any shops I go to, but I don't have little ones anymore, so I haven't thought about looking. But I think it's a good idea. It's been a lot of years, but I hated shopping with my kids when they were little because I couldn't concentrate on what I wanted to do when they were with me.