If you aren't needing to pass data, just get something that fits in the 12V outlet. They make them pretty small to where it looks good.
Like
https://www.amazon.com/Anker-Charger...dp/B01K9MQ8WW/
I did turn the one below the glove box into a USB port for Android Auto on my headunit. That way I could swap cables easily if I ever needed to, or just have no cable. I used this guy
https://www.amazon.com/gp/product/B01NAMU8KY/ It's worked great for about half a year now.