I've long known about using the UP (previous-history-element) and
DOWN (next-history-element) keys to move through the minibuffer
history. It's always been a little jarring that C-p (previous-line)
and C-n (next-line), which I'm very habituated to use (perhaps even
more than the actual arrow keys, since I touch type, and can use them
without moving my hands) don't work in the minibuffer—Emacs just beeps
unhappily at me.
I was pleased to find out that, in addition to the dedicated arrow keys,
M-p (previous-history-element) and M-n (next-history-element) scroll
through the minibuffer history. The should be much more easily
accessible to me—and I do scroll through the minibuffer a lot.