I’ve occasionally had good luck with ultra-cheap Chinese mice. Years ago, I bought one, with very simple left and right buttons and a scroll wheel, and it proved to be one of the most comfortable I owned. The wheel didn’t run smoothly at first but a quick trim of the plastic, and it’s been fine since.

   This US$3·89 mouse (price at time of writing) was a similar case. I ordered it to see if it might be better than the NZ$75 Asus ROG Strix Evolve mouse, and that was bought to replace my favourite, the Microsoft Intellimouse 1·1. One of those was being used after my Microsoft Laser Mouse 6000 died—like the Intellimouse, these had large bodies that people with bigger hands, like me, can use.
   As those in a similar predicament know, mice have shrunk over the last decade, so finding a replacement takes months as you read the specs and, in some cases, visit the stores to see if they have anything.
   A Tecknet mouse proved too low by a millimetre or two to be comfortable, but when I saw this no-name unit being sold by a place called 7 Elves Store (did they mean dwarves, as in Disney?) on Aliexpress, I decided to take a punt. (The specs suggest the brand name is Centechia, but it’s nowhere to be found on the device or in the heading and description.) And for US$3·89 plus (sorry) my share of carbon emissions from the air freight, it didn’t cost me much to find out.
   It arrived a few weeks ago in damaged condition. The buttons did not work at all, and once again I had to make some simple repairs to get it working. It’s too light. The plastic is of a crappy grade. And the details on the base of the mouse suggest whomever wrote the text had not been in the occident much, if at all. I don’t like the lights because I don’t care if a mouse has pulsing RGB effects since (a) my hand is over it and (b) I’m looking at the screen, not the mouse.
   But here’s the thing: it fits my hand. It’s nowhere nearly as comfortable as those old Microsoft mice, but as a cheapie that I can take in my laptop bag, it does a better job than the Tecknet. It’s not as comfortable as the Asus, but it beats every other mouse, that is, the ones I didn’t buy, that I’ve seen in the shops. On the whole, I can use it more than the Tecknet, and it will do when I’m travelling or out of the office, though I still haven’t found the holy grail of a decent sized Microsoft mouse. (The revived Intellimouse, as I may have mentioned earlier, is asymmetric, and its shape doesn’t work for me.) I’m not sure why this is so hard for mice manufacturers: you’ve all peaked a bit early, and none of the improvements you’ve made have advanced the ideas of user comfort and ergonomics.
   For those who care about this stuff, here’s the Aliexpress link.