To decorate with lights, bring battery powered fairy lights. The ones I have used at Pop are quite lightweight and have an option for on, off, or timer. I can't recall the length of time they stay on, but it works great so I come back to a lighted window without the lights being on all day long. Also, you'll want to bring some clear suction cup hooks so you can place the lights as desired. I love that so many at Pop decorate. One year we stayed at BWI for the holiday time and I think we were the only ones with lights on our balcony.