I love these inflatable solar lights. You can hang a few of them...lots of solar powered stuff in this thread!

https://www.amazon.com/OldShark-Inflatable-Lantern-Waterproof-Emergency/dp/B014SIFO9G/ref=sr_1_20?ie=UTF8&qid=1489102563&sr=8-20&keywords=inflatable+solar+light

Edit: and they're $10 Prime