It depends on the size of your fingers. Previously I mentioned a ring because there are no one-size-fits-all ones: they should fit your particular finger. So do banjo picks. Many manufacturers, though, solve this problem by selling sets of varying size. If you have a pair of TWS headphones, you may remember that they come with three or more pairs of ear tips. You choose yours and leave the rest to collect dust. Banjo pick manufacturers do the same.