You can dump the firmware and hardware decryption keys to allow an emulator like Yuzu or Ryujinx to impersonate your Switch and let you play online from a PC. You can also dump your saves and games so you could play your exact same files on an emulator.
Besides that, there’s CFW, homebrew apps, you could install Android and dual boot, there’s game mods you can run on the Switch hardware instead of in an emulator, you can run emulators that have been ported to Switch (PS1, DS, etc)