I've seen baby books there, but if you're looking to get creative maybe look through the crafts to make your own idea of a cute gender reveal. Here's some ideas: t-shirts, cake, balloons. Id go to the dollar store for party supplies. And stick with a gender neutral supplies like yellow untill you reveal it's a boy or girl.
They might have some items in that category, but I can't say for sure because that's not something I've had occasion to look for - Sorry I couldn't be of more help - C
Thanks! Your answer is awaiting moderation.