Wired computer mice might seem archaic, but they're incredibly easy to use. Children, or adults with smaller hands, might find that this mouse works well for them.
From Amazon
CORSAIR IRONCLAW RGB Wired FPS/MOBA Gaming Mouse – 18,000 DPI – 7 Programmable Buttons – Designed for Large Hands – iCUE Compatible – PC, Mac, PS5, PS4, Xbox – Black
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