Hi Robyn, the easiest way is to use string lights that have a battery in a "cork". Amazon sells them - https://www.amazon.com/Betus-Pack-Bottles-String-Lights/dp/B07D4CWMV8/ref=sr_1_3_sspa?keywords=cork+string+lights&qid=1577081937&sr=8-3-spons&psc=1&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUExMzk2WlBXMVpTRVhBJmVuY3J5cHRlZElkPUEwMTQ5MzI3MkI1ODRNTUxTSUROQyZlbmNyeXB0ZWRBZElkPUEwNTY4MTg5Mk9TNlE4UDRFQTk0RyZ3aWRnZXROYW1lPXNwX2F0ZiZhY3Rpb249Y2xpY2tSZWRpcmVjdCZkb05vdExvZ0NsaWNrPXRydWU= And to decorate the bottles here are few ideas our hometalkers have shared - https://www.hometalk.com/search/all?filter=wine%20bottle%20lights

https://www.hometalk.com/2425800/led-liquor-bottle-shelves-display

http://www.tastymatters.com/decorative-wine-bottle-lights-without-drilling/

http://www.homedesigninspired.com/20-awesome-ideas-how-to-make-wine-bottle-lights/

LED Liquor Bottle Shelves Display

Here's a beach themed one we made

https://www.hometalk.com/43329480/how-to-make-a-light-up-bottle-with-tinted-glass

How To Make A Light-up Bottle With Tinted Glass

Hi Robyn, there are lots of ideas on this site, just scroll down:

https://freshpatio.com/diy-glass-bottle-ideas/

Here's a good tutorial: https://www.youtube.com/watch?v=3nSXDjk6LWg

Here is a tutorial https://www.hometalk.com/43329480/how-to-make-a-light-up-bottle-with-tinted-glass

How To Make A Light-up Bottle With Tinted Glass

https://www.youtube.com/watch?v=9UWBBJgkqHY

https://www.youtube.com/watch?v=KhwHpMIT8WY

Here are some I made, they are easy to do and look amazing! https://www.homeroad.net/2018/07/recycled-corked-bottles-with-fairy.html

Robyn...You can add fairy lights (saw a lot on sale today) to the bottle them add ribbon, costume jewels, pearls, lace but the lights are pretty alone too.