Here's the one that I purchased specifically for use with my iPad 9th gen. The reason for this particular mouse is that it has a very low profile that makes it great for putting in a sleeve for transporting my iPad w/smartkeyboard cover, and short adapter cables and dongles, and power brick.
Rechargeable Wireless Mouse for MacBook Pro/ Air,Bluetooth Mouse for Laptop/PC/Mac/iPad pro/Computer
www.amazon.com
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