You can put a range of things on a bath tray such as a magazine, book, tablet, mobile, scented candles, a glass of wine, a cup of tea etc. However, if you are putting a heavy thing on it, make sure the tray has a sturdy construction and nice grip. You can also put your bath essentials on the tray, such as soap, body wash, shampoo, loofah etc., if you do not have other dedicated space for them in your bathroom. Som there is a wide array of things you can put in it.