No, unfortunately we do not have a space where we can store these things. Therefore it might be a good idea to bring a pillow or towel if you are going to sail a bit longer.
Although the boats are very stable and spacious, for young children we recommend to use life jackets. You can buy them at any water sports shop, but mostly you can also find cheaper inflatable life jackets at HEMA. But the golden tip we see most of our clients make use of, is putting on the floaties, since most young families do already have inflatable water wings.