Plugged a dollar store "gaming mouse" into my main laptop, I have hammered a Verbatim cheapy to death over 3 or 4 years, and got fed up with it's glitchy buttons. It's the Dollarama "Tech 1" brand. Initial impression is that it was very light, but that's not entirely a bad thing for strain in long term use, if it survives to long term use. It doesn't feel that flimsy despite that. You only get the standard left right and middle scroll. Left and right seem like low tension microswitches, click reliably. Scroll wheel is plastic rather than rubberised, feels odd at first. I could also regard this as a benefit having had so many rubber ones go sticky or even full on "gooey" on me. Wheel felt stiff and hard to click at first, but after a day it either wore in or I got used to it. Resolution seems about twice what the verbatim one was but not sure what that was in the first place, so 800-1600, 1000-2000, 1200-2400??? IDK tracks well. Cord has that woven mesh jacket so feels very slightly premium. USB plug however is twice the length it needs to be, like thumbdrive size almost, which is probably bad for leverage on your USB ports if you're clumsy. Yah, and it glows, cycles through colors, I don't know why but I thought there would be an apparent method to disable that, nope, nor a pause button if you just wanted it to stay one color, so yah, a bit puh-sychodelical. Wouldn't recommend leaving it plugged in where you're trying to sleep. Doesn't feel flimsy, but neither does an egg clasped in your hand, drop it on the floor and crack, not sure if this would take many drops, but then again it's light, so not a lot of momentum to arrest, just don't drop it then step on it I guess. Overall, it's a mouse, it mouses adequately. Good value for money I guess, but you can see where they saved you every cent. Pros, wouldn't add much heft to your laptop bag, you can lose it and not care, 7 year old kids will be green with envy. Cons, plug sucks, long term durability in question, but if you got a year out of it you couldn't really complain. Bad scrollwheel feel initially. Final score, silver ratio out of pi platypuses. (A star being lofty, heavenly, a guiding light, a platypus being the prime natural example of WTF)
Edit: subsequent beating of google with a rubber hose has revealed highly similar offbrand cheapo mice claiming 1600 DPI.
Unicorn herding operations are proceeding, but all the totes of hens teeth and barrels of rocking horse poop give them plenty of hiding spots.