Fzf can be a tremendous time-sink because its credible promise to improve your quality of life in the terminal.

One of my most-frequently-used pry customizations is a keybinding that opens the current backtrace in fzf, with the preview window showing the selected location, allowing me to quickly walk up or down the stack, with tons of context. `enter` takes me to that frame, and `ctrl-v` opens that file location in vim.