I need to give QEMU a try. I use VirtualBox (carefully kept free of the Extensions with their "Oracle now owns your soul" license) occasionally when I want a VM locally rather than just using one of the many on our network, and it does the job, but it never hurts to give alternatives a spin. This advent calendar and the seasonal time off might be my excuse. (Though any time off is typically preempted by my granddaughters, whose requirements expand to fit available resources. It's the Mythical Grandmonth.)