There are emulators to make your Raspberry Pi work like a video game console, such as a Nintendo Entertainment System, Sega Genesis, PlayStation, or even a DOS-based PC.

[Jonathan Bennet] showed that it’s possible to run a Raspberry Pi without an SD card by using the PXE boot feature, allowing it to boot and load its file system from a server on the same network ...

Auto boot: can maximize uptime by making the Raspberry Pi run whenever there is sufficient battery power or when external input power is present.