
I used to mount a TV but the new TV didn't work with the previous screws and I threw away the extra ones a few years ago. It was an expensive decision, but it saved me several trips to the hardware store to figure out what size I might need, so it was worth it.

Tryone Car Headrest Tablet Mount Holder: Stretchable Stand For IPad Air Mini/Cell Phone/Galaxy Tab/Kindle Fire HD/Switch Lite 4.7-10.5" Devices
13 Review

IKross 2-In-1 Cup Mount Holder: Perfectly Secure Tablet And Smartphone Holder For Your Car
14 Review

Wall-Mounted Hanger For Echo Dot 2Nd Gen - Space-Saving Solution For Amazon Alexa Smart Home Speakers With No Messy Wires Or Screws, Perfect For Your Home (Black)
15 Review

Tryone Auto Backseat Tablet Mount Holder For IPad Air Mini, Cell Phone, Galaxy Tab, Kindle Fire HD Switch Lite Or Other 4.7-10.5" Devices - Black
18 Review