Aerb 3-in-1 Stick
Aerb called its option the best 3-in-1 stick around, but it's basically a selfie stick and monopod with a built-in bluetooth remote shutter like most options. However, it fits all devices of any size, works with almost any Android or iOS device released in the past 2-3 years, and is a decent option for a low price. The cheapest entry level stick on our list, yet still stretches to 41-inches for wide-angle photos.
The battery for the stick (for bluetooth) is rather small, but should get you a days worth of selfie photos.