This conventional type of mouse can be used for various tasks. Children, or adults with smaller hands, might find that this mouse works well for them.
From Amazon
Perixx Perimice-802 Mini Wireless Bluetooth Mouse, Portable Small 3 Buttons Optical Mouse for Laptop Android Tablet PC, Works without USB Receiver, Black
Conrad Electronic
Perixx PERIMICE-802 W Mouse Bluetooth® Optical White 3 Buttons 1000 dpi