Make your own decorated mug, you just have to draw on the cup with sharpies and then leave them exposed at heat. That´s all, is really easy
You have to try this. It gives your room a relaxed enviroment.
You need ballons, wool and glue. First, fill the baloon with air, then put the wool around it and sumerge it in glue. Wait 2-4 hours, let it dry. Explote the ballon and right now you have your diy decoration