It's never a bad idea to have a mouse, not in the home but for the computer, because in some cases it's easier to use than fiddling with the keyboard. This is not the first mouse from Xiaomi, and it certainly won't be the last, but it's probably the cheapest and the newest one at the moment.
The Mi Wireless Mouse Lite is a wireless Xiaomi mouse that connects via 2.4Ghz to the USB port of your computer, phone, tablet, laptop, smartphones, etc. It has a clean design, black and dark grey colours, runs on AAA batteries, weighs 60 grams and has a sensor with 1000dpi sensitivity.
The price is 39 yuan, which is roughly ~ 1 775 forints, of course, plus various charges. But apart from that, I think it's a pretty good price. Sure, it's not a gaming mouse, but it's not designed for that, it's perfect for the average user, it's cheap, and the quality is ok.