Amazon has the VicTsing Wireless Ergonomic Vertical Mouse for a low $8.99 after Coupon Code: "WHWU4HFU" and clippable coupon. This is a pretty good price as it typically sells for closer to $12 on sale.
In our experience, we’ve found it significantly reduces wrist strain when working many hours glued in front of a computer.
https://www.amazon.com/dp/B07RK96…8dnXS