Don't need one. Still have original grey keyboard 48k, 2nd generation 48k, a Plus 3 128k, interface one and two microdrives, an RGB interface and several cases of games on cassette and 3" discs. They still get dragged out a few times a year as some of the games were so addictive, and playable, that my sons appreciate a nostalgia weekend now and then. I even have an emulator on my old XP machine.
OnePlus 5 review