Here's a product that I want to buy, that I don't want to build: I want a small, waterproof (or at least water-resistant) audio device that has a single speaker

Here's a product that I want to buy, that I don't want to build: I want a small, waterproof (or at least water-resistant) audio device that has a single speaker and three (or so) buttons. Pressing the first button plays a long audio file of hurricane and storm noises. The second button plays a long audio file of pirate battles. The third button plays a long audio file of WWII submarine combat sounds. The audio quality has to be very good. I'll pay up to $20-$25 bucks for this without thinking twice. Why? Tubby time for the kids! Of course, I could set up something myself, but I'm too lazy. Future iterations could include other similar devices (e.g., one with space sounds), or a "fourth button" that allowed custom sounds to be downloaded.