This year I've tried to use more of OpenBSD's base tools with little or no configuration files. Two that I focused on were tmux and cwm. I've been using tmux since before it was added to the base system, but I had tried to make it look and feel like GNU/screen. I stopped that nonsense. Now, my .tmux.conf is very minimal:
set -g status-keys vi
setw -g mode-keys vi
But I had been using spectrwm for my window manager. And a good friend, Andrew Fresh (afresh1), suggested that I try out cwm(1). So I did.