I was under dystopian lockdown when I harvested my potatoes - I just had a potato pot! It's like a two-layer pot, fairly big but not huge.
You can also get this kind of stand up sack too which I wanna try next time (because heaven forbid I ever have a garden). Needless to say, results may vary. Potatoes are super power hungry and prone to annoying, airborne diseases blown across from miles away, among everything else.
I had to amputate all the leaves off mine by the end due to that disease but I still got 6 decent potatoes out of it! One for every month of effort lol...