Using a computer without having a mouse is a difficult task. Children, or adults with smaller hands, might find that this mouse works well for them.
From Ecprof
SL630019RRBK - SL-630019-RRBK mouse Right-hand RF Wireless + USB Type-
Conrad Electronic
SpeedLink Piavo Ergonomic mouse Radio Optical Black 6 Buttons 800 dpi, 1200 dpi, 1600 dpi Ergonomic