An excellent Bluetooth mouse, not cheap but rechargeable
Although not a cheap bluetooth mouse, this one works very well with a Macbook or Windows laptop. Being rechargeable you don't need to keep changing batteries, unlike the Microsoft wireless mice I use on a desktop (which has no built-in bluetooth) and you don't need to plug in any dongle. It holds it charge for a long time. My advice is to label the USB-C cable because it doesn't seem to charge with all USB-C cables.