This was a quick little project I whipped out in an hour or so, but I have already gotten a ton of use out of it. I love baths, and when we put a standalone soaker tub in our bathroom, I definitely wanted to add some items to make it a more relaxing area.
So I made a bathtub tray! Sure, you can buy one, but if you have scrap wood laying around, chances are you can make one for free with just a little bit of effort. I had this piece of wood sitting in the garage, and it was actually already stained. (I had stained it for a previous shelving project but decided to go another direction with it, so this piece didn't get used.)
Here it is: