The improbably named Sunday Co of Guangzhou, have really gone to town on the convergent, combination mousepad. Not just a calculator and thermometer, but also a USB hub complete with a full blown card reader. Now that’s what we call a mousemat.
Multi-functions Mouse Pad, aggregate with Mouse Pad, USB Hub, Card Reader, Thermometer and calculator all in one. -You can also disconnect the USB Hub, Card Reader, Thermometer and calculator. Convenient for outgoing or traveling use.