Not op, but I’ve been eyeing on this as well

Amicc® 3m 9ft Portable Neon Light El Wire with Battery Pack Neon Glowing Strobing Electroluminescent Wire for Parties, Halloween Decoration (3m 9ft, Blue) https://www.amazon.com/dp/B019IQ8GF2/ref=cm_sw_r_cp_api_PlBrAbEM2PTJZ